Nicola, G.L. Et Al. Conservation of Mummies and Sarcophagi. 2008

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    GIAN LUIGI NICOLA

    MARCO

    NICOLA

    ALESSANDRONICOLA

    PRESERVATION AND CONSERVATIONOF MUMMIES AND SARCOPHAGI

    All images are copyrighted to the owners of the respective works of art and to the authors of this article

    Article from e_conservation, the online magazineNo. 3, February 2008, pp. 22-47/110

    www.e-conservationline.com

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    In Italy, and particularly in the collection held by the Egyptian Museum of Turin, there are many

    archaeological findings representing a challenge, in terms of conservation. Most of them were

    unearthed during the archaeological excavation campaigns carried out in Egypt during the XIXth

    and XXth century whilst some of them are donations received from private collections formerly

    belonging to wealthy personality and noblemen of the XIXth century, when it was fashionable to

    own Egyptian artefacts or even mummies. In many cases these collectors or their heirs donated

    such items to the museums for patronage or when they were no longer willing to possess them.

    These donations often constitute small collections, almost unknown, and held in Archaeological

    and/or Civic Museums.

    Until recently, archaeological findings of this kind were stored as and exhibited without the care

    required for a museum object, submitting them to improper restoration involving irreversible

    consequences, such as in case of mummies bandage removal and inappropriate use of

    sarcophagi, and well as invasive and irreversible treatments.

    The conservation of this type of archaeological material is difficult although quite often

    reserving unexpected surprises and great satisfaction. In this essay we will focus on some

    preservation and conservation issues we had to face when performing conservation activities on

    the mummies and sarcophagi acquired by some museums from private collections.

    Special attention will be drawn on environmental parameters, research and analysis,

    transportation systems, compatibility of materials and philosophy of conservation.

    Introduction

    Throughout the nearly 60 years of experience

    in conservation boasted by the three

    generations of the Nicola family, several

    interventions were made on Egyptian artefacts

    formerly belonging to private collections and

    then acquired by public Institutions. This

    essay will focus on archaeological findings ofsuch provenance nowadays held by the Italian

    Civic and/or Archaeological Museums. This

    choice is due to the fact that such findings are

    particularly interesting under the conservation

    point of view since they usually went through

    many vicissitudes, a history which seems to be

    more complex than the one discovered when

    restoring the mummies and the funerary

    outfits belonging to great collections such as

    those of the Egyptian Museum of Turin. In the

    past, the mummy and the sarcophagus of

    Pa Sheri en Aset(Museo Archeologico di Genova

    Pegli, Italy) were exposed in vertical position

    for many years and, after falling down, both

    the corpse and the container were seriously

    damaged and had to be restored to face the

    emergency. The subsequent intervention

    conducted actually involved an "archaeologicalresearch" into the finding, which brought to

    the recomposition of the written text inside

    the sarcophagus and the reconstruction of the

    complex outfit of funerary objects. Another

    interesting case we had to deal with was the

    conservation project relating to the Egyptian

    mummy and the relevant sarcophagus belonging

    to the Museo Civico di Merano, Italy, involving

    the recovery from the damages caused by a

    mouse and the removal of a previous,

    inappropriate restoration. At the moment1,

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    we are also carrying out some analysis in order

    to plan the best possible conservation activity

    required on a Roman age Egyptian mummy

    belonging to the Museo Scarabelli, Imola,

    presenting problems which were apparently

    due to the putrefaction process. The operations

    performed during conservation activities

    required for mummies are sometimes incorrectly

    defined with the Italian term "restauro"

    (which literally corresponds to "restoration",

    although the term is usually translated as

    "conservation" to correctly match the meaning

    in English) however, they are actually steered

    towards the material preservation, with the

    aim to ensure the possibility of further studies

    by means of non-destructive analysis.

    Pa Sheri en Asets mummy and sarcophagus

    (Museo Archeologico di Genova Pegli, Italy)

    Thanks to the conservation project, started in

    1991 and ended in 1999, it has been possible

    to apprehend some interesting information on

    the construction of these findings and to better

    understand their history. The sarcophagus

    belongs to the anthropoid bivalve type:

    apparently, this technique was often used in

    the construction of coffins of mummies of the

    same age of the one under review (images 1, 2).

    The wooden moulded parts composing the

    sarcophagus were not glued one to the other

    but rather fixed by wooden pegs with circular

    1 2

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    profile, which were transversally fitted into the

    axes thickness. The coffin, once built and

    assembled, was then sawn transversally, in

    order to obtain perfectly matching bed and top

    (images 3-5).

    On the cut surface between the bed and the

    top, six housings were carved for the pegs to

    be fitted therein, with proper rabbet partially

    filled with glue and fibres. The coffin was then

    closed and sealed with plaster, which was applied

    manually on the outside after the completion

    of the interior decoration and placement of

    the corpse inside. The sarcophagus internal

    and external surfaces are decorated with

    tempera colours on a layer of plaster, which

    fills the slits between the axes and completely

    covers the wood (images 6, 7).

    6 7 5

    4

    3

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    In this sarcophagus there wasnt a canvas

    incorporated in the preparatory layer, which

    has been found sometimes within coffins of

    the same age. During the conservation

    activities, it has been possible to ascertain

    that the whole decoration was originally drawn

    on the coffin keeping it open; such type of

    decoration differs from the one executed on a

    closed coffin, with the mummified body inside,

    the decorative motifs on the bed are

    independent from those on the top, in other

    words there is no continuity (image 8).

    Furthermore, it became evident that the drawing

    was sketched in red and then the colours were

    laid with a particular order: red first then yellow,

    green, blue and finally black. The latter marks

    out the drawing in some particular areas. This

    colour sequence, detected looking at the super-

    imposing layers of the hues, often recurs in the

    decoration of Egyptian findings of this age. On

    the top, in correspondence with the areas over

    the mummys chest and legs, the remains of a

    semi-transparent amber-coloured substance,

    similar to a varnish, were detected (image 9).

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    9

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    We found this substance several times on other

    contemporary or earlier sarcophagus other times

    it had been removed during previous restorationssince it was deemed as non-original. Said

    substance, as the majority of natural varnishes,

    is easily soluble in organic solvents and shows

    golden yellow fluorescence under UV light.

    During an earlier conservative operation, in

    order to prevent uplifts and detachments,

    some lightweight tissue paper was applied on

    the whole surface to protect it and sealing thetop to the bed. The lower part of the top, over

    the feet, was disjoint and slack; from the

    openings it was possible to see that part of the

    mummy had fallen down due to the prolonged

    standing in vertical position (image 10).

    Before removing the thin layer of interim tissue

    paper, a preliminary inspection to assess the

    conditions of the mummy and the presence of

    interior decoration inside the coffin has been carried

    out by means of optical fibres (images 11, 12).

    10

    11

    12

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    From the results of this preliminary exam we

    were expecting to find out a serious damage,

    which was actually ascertained after the opening

    of the sarcophagus after having eliminated the

    tissue paper sealing its two parts. The remains

    of the mummy, which were completely dis-

    articulated, occupied the lower half of the

    sarcophagus as a compact mass taking the shape

    of the coffins interior. Many fragments of

    painted plaster detached from the coffin and

    felt on the corpse whilst many particles were

    deposited among the bandages (image 13).

    After temporarily fixing the lift-ups of the

    interior decoration still in place and carefully

    collecting the fragments fallen on the bandages,

    the corpse was transferred on a specially

    provided stretcher, carefully avoiding to alter

    the position of the mummys remains. In the

    area where the corpse was laying inside the

    bed, many fragments of the coffins interior

    decoration were found, as well as a few faence

    amulets and a multitude of annular and

    cylinder shaped beads (nearly 13,000), which

    originally formed the magic armour (image 14).

    Thanks to the radiographies of the corpse,

    weve been able to ascertain that the coffin

    had already been opened not just because the

    bones were in absurd position (the feet under

    the right elbow and the jaws under the feet)

    but also because the carved beard of the

    sarcophagus was found inside the coffin, with

    the mummy (images 15-17).

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    14

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    In the past, the sarcophagus certainly was

    exposed to a severe trauma, which caused the

    breakage of a few parts of the wooden coffin

    and of the corpse. Such distress did not

    happen recently: in an old photograph of the

    Museum, the sarcophagus is standing, secured

    by a rope winded around the abdomen and

    a wire around the throat in order to prevent

    its falling down inside the glass cabinet

    (images 18).

    Relying on the radiography, we carried out a

    sort of "archaeological research" into the

    lump of organic powder, burnt bandages,

    bones, skin, resin, plaster and wood

    fragments, beads and amulets (image 19).

    During this sorting operation the black stone

    sacred anepigraph scarab, usually placed over

    the heart of the deceased, was found (images

    2022).

    15 16

    17

    18

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    All the findings were selected and recorded.

    At this point it was possible to start restoring

    the wooden sarcophagus: the fragmentary

    parts found inside the case, including the

    carved beard have been put back in place; the

    broken pegs have been replaced if not

    recoverable whilst the missing ones have

    been replaced and fitted into the original

    housing. The new pegs have been made out

    of robinia wood as the mechanical stress

    performance is similar to the original pegs

    one and also because it is easily recognizable

    by laboratory analysis or under UV light as its

    fluorescence is peculiar. The assembly of all

    the parts back in place enabled to recover

    some of the original strength of the structure.

    We did our best to limit the use of glues,

    which have been employed only for anchorage

    and consolidation of the detached fragments

    whilst no glue was used to fix the pegs or the

    original set-up in order not to alter the

    original cabinet. Only in one case it was

    necessary to insert a stainless steel pin, in

    the left side area of the coffins bed. Once

    completed the coffins assembly it was possible

    to proceed with consolidation, fixing the

    colours as well as the preparatory layer to

    the wooden support; such operation turned

    out to be quite difficult due to the presence

    of wax, which had been applied in previous

    restorations as a fixative (images 23, 24).

    20 21 22

    23 24

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    For this reason it was first necessary to execute

    an accurate cleaning of the decorated surfaces,

    even if this operation was particularly

    difficult, considering the frailty and porosity of

    the paint. The dust and organic substances

    deposited on the surface were removed first.

    The old wax fixatives were then removed byextraction using organic solvents applied on

    cellulose supports. At this point the lengthy

    work of repositioning the many detached

    fragments of the coffins interior decoration,

    almost tiny fragments, could start. Most of the

    interiors inscriptions have been recomposed

    relying on the work of text interpretation

    (carried out by an Egyptologist2) and on the

    preliminary study on the morphological and

    technical features of the fragments, including

    the plasters thickness, the distinguishing

    marks of the wood fibres on the plaster and

    the brushstrokes (images 2527).

    All the blue faence elements, the beads, the

    tiny cylinders, the amulets and the sacred

    scarab have been collected with care, in order

    not to further damage the part of the mummy

    still in the original anatomic position.

    Therefore, in some cases we preferred not to

    extract some beads fallen deeply into the still

    swathing mummys legs and pelvis. Finding

    the above mentioned recovered elements wecould understand that the mummy was

    probably adorned by magic armour made of

    extraordinarily tiny elements. As agreed with

    the Principal and the Superintendent, these

    elements have been used to recompose the

    fragmentary magic armour taking as a model

    some analogous findings of the same age

    existing in various museums.

    More particularly, the magic armour belonging

    to the Muse du Louvre, Paris, is composed by

    a series of round shaped beads which are

    28

    25 26 27

    29

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    similar to the ones found on the Pa Sheri en

    Asetmummy, even if the size of the faence

    small cylinders is smaller and the shape of the

    sacred winged scarab is different. The

    embroidery recomposition has been executed

    using linen threads, following the typical

    construction scheme of the Egyptian magic

    armours of that age (images 28, 29).

    Nevertheless, the result is merely a proposi-

    tional and not a faithful reconstruction and is

    easily reversible hence not precluding any

    further development. The remains of the

    mummy have been placed in anatomic

    position, even without proceeding with the

    complete reconstruction of the skeleton

    (image 30).

    The detached bandages and fragments were

    put into paper bags and placed over the

    corpse, which was then wrapped in canvas

    and placed on a moulded and perforated

    fibreglass tray3, containing and holding the

    mummy though allowing air circulation. The

    corpse and the tray as a whole have been

    bandaged and covered by a modern linen

    sheet secured by a braid, as in ancient times,

    and the magic armour has been laid thereon

    (images 31, 32).

    30

    31

    32

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    Egyptian mummy and sarcophagus,

    Museo Civico di Merano, Italy

    The mummy and the sarcophagus had been

    stored for a long while in the deposit of the

    Museo di Merano, inside a closet wooden case

    which shielded the findings but could not

    prevent the damage caused by the xylophagous

    insects and rodents neither dust infiltration

    (images 33, 34).

    As the case was opened it was immediately

    clear that the content was in very bad

    conditions: the sarcophagus was disjointed in

    several points despite the previous restorations

    and covered by a thick layer of dust, whilst the

    mummy inside was under a blanket of cotton

    stuffing and chips (images 35, 36)

    The sarcophagus is structurally analogous to

    the Pa Sheri En Asetsarcophagus, with the

    exception of the decoration, which is ratherpoorer in this case. Furthermore, this sarco-

    phagus was used as a container in the past,

    as suggested by the eighteenth century metal

    hooks applied thereto. The wooden sarcophagus,

    still bearing the plaster layer with tempera

    decoration has been already restored in al

    1915 ca., with a patchy recomposition using

    nails, screws4 and other metal and wooden

    stiffeners. The painted surfaces had been

    36

    35

    34

    33

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    treated with a fixative which resulted

    extremely tough and opalescent. The chemical

    analysis detected the presence of a white -

    nacreous siliceous layer, materially compact

    with varying thickness, which suggested the

    presence of a sodium silicate. Unfortunately,

    the cleaning test results showed that it

    wasnt possible to remove such layer without

    risks for the artefact and therefore cleaning

    had to stop when reaching the ultimate layer

    composed by the above mentioned substance

    (images 37, 38).

    The conservation activities performed by our

    team in years 2002-2003 brought to the

    recovery and reassembly of all the wooden

    structures parts which were broken or

    detached but didnt get lost as secured by

    metal or wooden joints. Unfortunately, the

    parts which had been fixed with nails are

    now lost and we can only assume their

    existence from the presence of a numberof nails still in place. Our conservation

    intervention was focused on recovering

    the original joints efficiency by replacing

    the lost pegs and restoring the broken ones

    screw-driving internal pins therein. We tried

    to limit as much as possible the insertion of

    foreign elements which, due to their intrinsic

    characteristics, may seriously damage the

    wood inducing the formation of cracks.Taking as a reference the previous restorations

    steered towards ensuring mechanical strength

    to the artefacts, it may be noted that the

    metal plates fixed by more than one fastener

    performed better than seaming with single

    rigid elements (such as nails or screws)

    since these exercise mechanical strength

    in a restricted area, thereby provoking,

    in the course of time, the breakage of the

    original wood which is extremely fragile and

    dehydrated. The insertion of single pins was

    limited to the restoration of the original pegs

    made out of hard wood5 since the pin

    insertion allowed recovering the pegs

    efficiency (images 39, 40).

    37 38

    39

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    We avoided as much as possible, using glue

    and wooden junctions, to join the various

    parts of the original framework6 as alien, not

    compatible or distinct whilst the fractures

    within a single element have been normally

    bonded with vinyl glues (image 41).

    The mummy was inside the sarcophagus and

    was overcrowd by cotton padding and wood

    shavings.

    During the operations carried out to find out a

    suitable package to safely transport the mummy

    to the laboratory, the above mentioned material

    was removed and we discovered that the

    cotton stuffing came from the interior of a red

    velvet pillow placed under the mummy during

    the previous conservation intervention, dating

    back to the beginning of the XXth century.

    41

    42

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    provided frame, moulded to include the shape

    of the mummy: this way it was possible to lift

    the corpse without causing any damage, as

    shown in the radiographies executed before

    and after transportation (images 46, 47).

    The mummy was "cleaned" using a micro

    vacuum cleaner to remove the dust on the

    surface whilst the ragged bandages and cloths

    were fixed with stitches. The survived

    cartonnage elements were removed and

    restored separately. The mummys safe

    withdrawal from the sarcophagus allowed us

    to better work on the sarcophagus, as

    illustrated previously.

    However, there still was the problem of the

    mummys conservation: the mummy was

    The pillow was removed from the original

    position by a mouse: the rodent also damaged

    the mummy to build up its nest with cotton

    stuffing and bone fragments taken from the

    mummified body. The corpse of the mouse was

    also found under the sarcophagus. Once dulypacked, the remains were taken to the

    laboratory, where the mummy was withdrawn

    from the bed containing it (images 42-45).

    To withdraw the mummified body from the bed

    we had to provide a harness in order to

    prevent the structural failure of the damaged

    parts of the corpse. The harness was made

    securing the corpse and the velvet pillow with

    some braids, using a Teflon needle. The

    braids were then fixed to a specially

    44 45

    46

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    structurally damaged and it was sensible not

    to put it back into the coffin without a proper

    support, which should have been suitable to

    enable the mummys safe withdrawal in the

    future without being too visible. A cast of the

    lower part of the mummy was necessary to

    make such support: the corpse had to be

    completely winded up with a transparent film

    protecting it from humidity (images 48-52).

    Then the lower part was covered with a nylon

    sheet and a canvas, both fixed to the

    structure though well adhering to the

    mummy. The nylon sheet was placed to make

    sure that the cast could be easily removed

    whilst the canvas would strengthen theplaster cast. Once obtained the shape of the

    body from the cast it was finally possible to

    realize the fibreglass shaped support required,

    which was drilled in order to allow air

    circulation. The holes are hidden by canvas

    coverage (images 53, 54).

    After cleaning the mummy and the

    cartonnage, the latter was fixed to the

    bandages as it was before the intervention

    (images 55, 56).

    48

    47

    49 50

    51 52

    53

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    Egyptian mummy, Museo Archeologico, Imola

    At the moment1 we are working on a Roman

    age Egyptian mummy of a girl. The mummy

    apparently had serious conservation problems

    but, after an in-depth preliminary study, the

    problems seemed to be less serious thanexpected. Looking through the glass cabinet,

    the mummy seemed to be progressively

    degrading. Our intervention was steered

    towards finding out a specific and appropriate

    conservation metho-dology and was also the

    occasion to study the mummy under the

    archaeological and anthropo-logical point of

    view. In October 2003 the Museum Director of

    the Museo Archeologico di Imola, contactedour team asking to sort out a conservation

    problem with an Egyptian mummy formerly

    belonging to the Scarabelli collection. The

    mummy, which until recently had clearly visible

    golden areas on the face, at the time we were

    called looked dark, brownish and lucid and was

    also showing the signs of deliquescence.

    The glasses of the showcase containing the

    mummy, presumably dating back to the XIXth

    century, were misty and therefore it was difficult

    to inspect the archaeological finding (image 57).

    Furthermore, some worm-holes were detected

    on the wooden parts of the container thus it

    seemed that the mummy was attacked by

    insects. In consideration of the above we

    planned to examine the corpse after removing

    it from the glass showcase. However, since we

    suspected putrefaction could be in process, we

    decided to execute some preliminary analysis.

    In November 2004, after taking the mummy

    inside the glass showcase to the laboratory,

    the whole was introduced inside an air-tight

    glass cabinet equipped with valves and air

    taps (image 58).

    After nearly six months, Prof. Minero and Prof.

    Maurino from the Analytical Chemistry

    department of the University of Turin,

    cooperating with our team of conservators,

    took the first sample of air from the glass

    cabinet (throughout one of the faucets),

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    the second sample of air from the glass

    showcase containing the mummy (drilling a

    port on the rear part of the glass showcase),

    and a third sample of air from the laboratory

    environment (images 59-62).

    Thanks to the analysis, we ascertained that the

    glass showcase containing the mummy was no

    longer air/water-tight, despite the glass silicon

    seals since the warm holes enabled air

    circulation and humidity as well.

    58

    60

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    As a consequence, the showcases misty

    glasses were due to condense phenomenon and

    therefore, since the showcase was no longer

    efficient, it was necessary to replace it. The

    chemical analysis performed by Prof. Minero

    and Prof. Maurino showed characteristic

    markers of Creosote, probably used as a

    pesticide and antiseptic during previous

    conservation interventions. Creosote is a

    hazardous cancerogenic substance which had

    to be appropriately treated and efficiently

    confined within the new showcase; with the

    aim to minimize the risks related to this

    substance and to other hazardous products

    used in conservation in the past, it would be

    sensible to have some official directives

    requiring atmosphere control in the museum

    environment. In order to avoid biological and

    chemical risks for the personnel, we decided

    to drill a few ports on the wooden parts of the

    showcase in order to proceed with the washing

    of the mummy showcases atmosphere bymeans of an autoclave, alternating vacuum

    cycles to clean air input (image 63).

    After opening the glass showcase, we could

    see that the mummy had a brownish lucid

    colour partly hiding the gilded parts, once

    clearly visible (images 64, 65).

    The girls head was disjointed from the bodyand, between the head and the neck, there

    was a cloth pad obstructing the occipital hole.

    The above mentioned gildings were mainly

    visible on the forehead, on the teeth and

    possibly on a pad within the mouth cavity

    (image 66).

    Lifting the green cloth laid on the corpse as a

    result of the previous conservation intervention7,

    we found out some other gilded areas on the

    breast, the abdomen and the pubis (image 67).

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    64

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    Near the feet and the head some bitty hair is

    visible at the showcases bottom and over the

    green cloth. Some white particles derivingfrom the showcases interior peeling deposited

    and adhered to the skin, which was slightly

    deliquescent, sticky and soft (image 68).

    The rupture of the right arm in the area

    centred around the omeral joint had been

    repaired by means of a little greenish pin

    and the arm was laid on a piece of wood.

    The ercolation of the brownish-lucid substance

    on the body caused the adhesion between of

    the arm to the wood as well as of the corpse

    to the pillow on which the corpse was lying

    down. We noted the leg fractures in the area

    centred around the knees, put back inanatomic position during the previous

    conservation intervention. Inside the glass

    showcase there were four bottles containing,

    according to the labels, calcium chloride and

    synthetic camphor. Nearby such bottles the

    decorative cord has faded, uniformly and

    therefore independently from the content

    of the bottles whilst the original hue of the

    most distant parts is in perfect conditions.

    The radiographies revealed serious damages

    to the skeleton and the presence of pins

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    67

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    which have been used for hairdressing and to

    repair the omeral fracture (images 69, 70).

    For instance, we took into consideration the

    possibility to keep the mummy in inert gas

    atmosphere (Nitrogen) to protect it from

    microrganisms and parasites; in such case it

    would have been necessary to check the presence

    of anaerobic bacteria, which could be dangerous

    in this kind of environment (image 71).

    68

    69

    70

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    The biological analysis performed8 showed

    absence of fungi and anaerobic bacteria alive

    and a normal presence of aerobic bacteria on

    the green cloth while they were absent on thesurface of the corpse (image 72).

    It may be noted that if the substance taken

    from the corpse of the mummy contaminated

    the culture of bacteria taken from the green

    cloth, these would not survive. This information

    was a key-factor to be considered for the

    design of the new showcase: as the air chemical

    analysis, this particular data enabled our teamto understand that the archaeological finding

    was already treated with preservatives

    commonly used as pesticides as well and also

    had antiseptic properties. As a consequence,

    treatment and conservation in inert gas

    atmosphere was considered not necessary.

    Even under the operational point of view, the

    absence of pathogen bacteria was a guarantee

    of safety for those operators treating the

    mummy and such condition simplified

    working procedures.

    Our conservation activity was limited to the

    removal of the parts of cloth which covered

    the corpse as well as of the white fragments

    detached from the old showcases interior

    which adhered to the mummys skin and to

    the detachment of the mummy from the green

    cloth pillow and of the arm from the piece of

    wood. Finally, the corpse has been placed on a

    stretcher lined with a sterile double fibreglass

    net layer (images 73, 74).

    71 72

    73

    74

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    At the moment1, while waiting for the new

    showcase, the corpse is kept inside a Plexiglas

    cabinet with climate control (18-20C; 50-55

    % Relative Humidity) (image 75).

    There are no items similar to the aforesaid

    mummy, in terms of conservation parameters

    required, at the Archaeological Museum of

    Imola. In the case of mummies, it is

    necessary to design a specific container for

    the conservation of archaeological findings

    requiring particular attention. It is actually

    necessary to conciliate the complexity

    deriving from conservation needs, design

    costs, realization and museum management.

    Having analysed the conservation environment

    adopted by different museums worldwide to

    preserve their mummies, weve been able to

    find out different parameters, which do not

    depend exclusively on the climate area in

    which each museum is located. In the course

    of this study we evaluated the museumenvironmental conditions, the microclimate

    inside the museum and the macroclimate

    outside, the number of visitors in relation to

    the museums dimensions and fruition

    capacity, the conditions in which the item is

    exposed and finally the problems which

    apparently determined the worsening of the

    mummys conditions.

    For the new showcase we also took into

    consideration some variables, such as

    durability of the materials to be used for the

    showcase and their suitability for the

    proposed solution. Last but not least we

    examined the context in which the showcase

    should be fitted, under the aesthetical point

    of view. Hence, the options polarized towards

    a showcase with aluminium framework, wood

    lining and stratified glass including UV filter

    film. It will be possible to control the climate

    parameters inside the glass showcase

    throughout the specially provided

    instruments; in case of imbalance exceeding

    the safety limits, it will be possible to

    intervene for corrective action.

    A further campaign of analytical analysis9 onthe mummy turned out to be extremely

    interesting as identifying some of the materials

    within the archaeological findings.

    75

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    Of particular note was the X Ray-Fluorescence

    (XRF) portable instrument, which requires no

    sampling and is therefore a non-invasive and

    non-destructive analysis. Throughout this

    technique, it was possible to obtain some more

    detailed information on gold, which turned out

    to be particularly pure (images 76, 77).

    Chlorine and Potassium signals were often

    detected as well, suggesting the use of chlorides

    during embalming operations or afterwards, for

    conservation. At the moment further analysis

    throughout gas chromatography has been

    undertaken to identify the organic substances

    of the brownish-lucid layer on the mummys

    surface and to verify the presence of henna or

    other dyes used for hair colouring.

    Radiocarbon dating of the cloth found at the

    base of the skull will provide further details on

    the age of the archaeological finding and will

    improve our knowledge on the Egyptian

    embalming techniques.Some anthropological studies and analysis

    carried out by the academics10 of the

    University and of the Anthrpological Museum

    of Turin, also relying on various analyses, still

    have to be completed. The results of the

    aforesaid studies, together with other

    information relating to the preservation and

    conservation of this particular mummy will

    be presented at the VI World Congress on

    Mummy Studies, which will be held in

    Lanzarote (Canary Islands) in February 20071.

    Conclusions

    These three cases are certainly significant

    however we could narrate about many others,

    revealing some embarrassing anecdotes. As an

    example, during the performance of conservation

    activities on a mummy belonging to the Civic

    Museum of Asti11, we detected some damages

    which were probably imputable to the former

    owners or to the museum conservators who

    tried to withdraw the amulets from the corpse

    without the necessary care. Thanks to the X-Rays analysis, the missing parts of broken

    amulets exposed in the Museums showcase

    were found inside the mummy.

    Hopefully, conservation may help us under-

    standing as well as enhancing our knowledge

    as no conservation intervention can leave

    knowledge aside. In the near future, the

    sarcophagus belonging to the Narni Museum

    as well as a mummy - not belonging to thisinstitution which has already been studied

    by the academics of the University of Pisa

    from the anthropological point of view, will be

    the occasion for new studies steered towards

    an in-depth knowledge of this archaeological

    finding, considering that many coffins were

    re-used in the past. Even in this case, an

    interdisciplinary approach will be necessary

    to obtain reliable scientific results12 while

    coordination is essential to properly use and

    elaborate the information available.

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    77

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    Acknowledgements

    We would like to thank the following people

    and institution for making some aspects of our

    work possible:

    Dr. Guido Rossi Archeological Museum of

    Genova Pegli

    Dr. Caterina Longo Civic Museum of Merano

    Dr. Laura Mazzini & Dr. Daniela Picchi Civic

    Museum "Scarabelli" of Imola

    Ms. Melanie Zeffirino (translation) and Ms.

    Carla Gori (paging)*

    Endnotes

    1. The present article was presented at the EITEC

    Workshop (Encontro International de Tecnologias

    Aplicadas Museologia, Conservacao e Restauro), 19-20

    October 2006, Coimbra, Portugal.

    2. Dr. Valeria Cortese - Torino.

    3. Compare the construction technique of the fibreglass

    tray described in relation to the case of the mummy

    belonging to the Museo Civico di Merano.

    4. The use of screws is certainly less stressful than

    employing nails, which have to be inserted with a

    hammer, involving a serious trauma for the layers of

    plaster and paint. The damage is particularly serious

    when single nails are used whilst the appliance of plates

    fixed by means of more than one fastener is less invasive.

    5. When it was necessary to replace a missing peg into

    the original housing, the new peg has been made out ofRobinia wood a species which did not grow in ancient

    Egypt having similar mechanical stress performance to

    the Nile Acacia and other hard woods usually employed

    to make pegs. Furthermore, this type of wood is

    absolutely recognisable and therefore distinct for the

    typical fluorescence to UV light.

    6. The original technique required the union of

    structural elements throughout pegs which were

    sometimes totally hidden in the wood thickness and

    *Article submitted to EITEC 2006

    sometimes placed diagonally so that the head was visible.

    All the slots were filled with plaster (containing iron

    oxides and gypsum), which was often applied on the

    surrounding area and, more frequently, was the prepara-

    tory layer for the tempera decoration.

    7. During a previous conservation intervention, the corpse

    was recomposed on a green velvet pillow with a decorative

    cord. A green cloth was also laid on it to cover nudity.

    8. Biological analysis has been performed by Dr. Daniela

    Riccio (ALCHIM S.a.s.) coordinated by ADAMANTIO S.r.l..

    9. Performed by ADAMANTIO S.r.l.

    10. Performed by Dr. Boano, Dr. Fulcheri, Dr. Grilletto, Dr.

    Carnazza, Dr. Bresci, Dr. Meaglia, Dr. Barbero and Dr. Rabino

    11. Compare in bibliography "Museo Archeologico di Asti:

    La collezione Egizia" pag. 43.

    12. Compare in bibliography "Sarcofagi della XXI dinastia

    (CGT 10101-10122)"

    Bibliography

    1. E. Leospo (ed.); Io vivr per sempre Storia di un

    sacerdote dellantico Egitto. Tormenta Editore, Genova

    (1999)

    2. G. L. Nicola; Restauro di opere restaurate:

    problematiche di intervento in due casi limite.

    Proceedings of XIX International Conference "Science and

    Cultural Heritage" Bressanone (Italy) 1-4 July 2003,

    Arcadia Ricerche, Padova (2003)

    3. E. Leospo (ed.); Museo Archeologico di Asti La

    collezione egizia. Ages Arti Grafiche, Torino (1986)

    4. G. Fornaciari, A. G. Naccarato, F. Mallegni; Autopsia per

    una mummia. Archeologia Viva Anno XIII n 44 Marzo-

    Aprile 1994 - Giunti (1994)

    5. A. Niwinski (ed.), G. L. Nicola, T. Radelet, G. Laquale;

    Sarcofagi della XXI dinastia (CGT 10101-10122) Ministero

    dei Beni e de delle Attivit Culturali, Torino (2004)

    6. A. M. Donadoni Roveri; Passato e Futuro del Museo

    Egizio di Torino. Allemandi & C., Torino (1989)

    7. G. L. Nicola (ed.); De Gypso et Coloribus. Celid, Torino (2002)

    46 e_conservation

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    Prof. GIAN LUIGI NICOLA

    NICOLA RESTAURI S.r.l - Italywww.nicolarestauri.it

    Contact: [email protected]

    In 1966, after completing his studies in visual

    arts, Gian Luigi Nicola graduated at the

    Accademia Albertina of Turin and was awarded

    with professorship one year later. Since then

    hes been working with his father, not only in

    the restoration of paintings but mainly

    specialising in conservation of archaeological

    findings of various materials such as wood,

    stone, plaster, and clay (particularly from

    Egypt) requiring treatment in situ. In 1988 the

    experience of all members of the Nicola family

    merged into the new-born NICOLA RESTAURI

    S.r.l. Gian Luigi Nicola is one of the Technical

    Directors in-charge, by virtue of the great

    experience acquired working with the Egyptian

    Museum of Turin and a number of Italian

    Archaeological Museums for which he restored

    so many artefacts, including more than 200

    old Egyptian wooden sarcophagi, nearly 900

    ceramic vases and handicrafts, stone

    monuments and almost all the statues of

    pharaohs and gods held by the Egyptian

    Museum of Turin. In 1975 and 1983 by

    appointment of the Egyptian Government, he

    drew up two preparatory projects for theconservation of the Tomb of Nefertari and, in

    1992, he was invited by the Egyptian

    Government, to participate to the

    international conference on the Sphinx

    conservation project, being one of the 16

    members of the international team of experts

    working on this goal. Last but not least, since

    1998, Gian Luigi Nicola is Professor of

    conservation and training at the Academy of

    Fine Arts of Turin, for the BA and MA degree

    courses in Conservation Studies.

    Dr. MARCO NICOLA

    ADAMANTIO S.r.l. c/o CNR-ISTEC Italywww.adamantionet.com

    Contact: [email protected]

    Marco Nicola represents the third generation of

    a family of conservators. He took an honours

    degree (110/110) in chemistry at the

    University of Turin in 2003, presenting his

    final dissertation on Protein-based media

    identification and ageing in Art. In 2005 he

    started his Science and Material Technology

    PhD, working on the bio-susceptibility of

    restored materials. On February 2005, with his

    friend Dr. Admir Masic, he founded ADAMANTIO

    S.r.l., a start-up hosted by University of Turin

    and CNR-ISTEC, carrying out specific projects

    relating to conservation, including scientific

    analysis and researches focused on preservation

    and restoration of cultural heritage. As Board

    Director and Conservation Scientist in chargeof research and conservation projects, Marco

    Nicolas professional experience in conservation

    ranges over a variety of subjects, including

    artefacts and monuments of architectural and

    historical interest, archaeological sites, mural

    paintings, oil and tempera paintings on canvas

    and wood panel, book and paper conservation,

    as well as stuccoes, stone, wood, terracotta,

    mosaics, enamels, metals and archaeologicalfindings such as mummies. He performed some

    interesting analysis and research campaigns

    focused on material identification, dating and

    damage assessment thereby providing advice

    on conservation strategies as well as analysis

    driven to identify and eventually carry out the

    most appropriate treatments required. Since

    2004, he has been cooperating with the family

    company, NICOLA RESTAURI S.r.l., as R&D

    Manager in-charge of chemical and scientific

    analysis for conservation projects and activity.

    CONSERVATION OF MUMMIES AND SARCOPHAGI

    e_conservation 47

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