ASK FOR - I N S I S T O N -

TYGON Percentage-wise, yes, and dollar-wise, too, the money any laboratory spends for laboratory tubing amounts to little. But the cost of using inferior quality tubing can be extremely high. Contam­ination of a single solution might cost more than a year's supply of tubing.

That's basically why laboratories the world over use Tygon plastic tubing — insist on Tygon — refuse to accept tub· ing sold as "just as good as Tygon/' For laboratory technicians know Tygon is the one tubing completely "zieutral" — neither affecting nor being affected by virtually any solution they might use.

Add to this outstanding and proven quality: Glass-clearness, string-like flex­ibility, unmatched coupling ease, and an availability in a range of sizes to meet every need — and it's easy to see why TYGON is the accepted standard of laboratories everywhere.

IT COSTS SO LITTLE TO

t o o e l y b e e s ·

or Wrjtoofocf fo U. S. Sfontwor» · Akron 9, Onto

176Ψ

Carefully engineered to give fast, easy, safe operation and long, dependable service. Units have sturdy welded steel frames . . . long-wearing, chemical-resistant rollers . . . smooth-running bearings · . . adjustable roll spacing . . . heavy-duty motors and drives for rigorous continuous service. MU. S." has the answer to every Jar mill need — "Unitized" mills with pat­ented self-centering rolls, Long-Roll units, and special cabinet types to meet specific requirements.

trtfii rot •muff* no

\

MS*

LETTERS Chemist Need Good Wives

DEAR SIR: The thoughts expressed by Mrs.

Robert T. Keen (C&EN, Nov. 18, 1957, page 9) are not new and have been heard on every campus in the U. S. for years.

One hears more and more these days about the shortage of scientists. What one does not hear about is the num­ber of scientists we have lost because a young student was faced with the choice of graduate work or the girl he loved. Often the young lady, sensing that his choice will be graduate work, agrees to marriage, then begins a cam­paign which results in his dropping out of school (with a master's degree, if he is lucky) to accept a position which will allow her to enjoy a "decent standard of living."

Λ great fraction of the graduate student's life is spent in study at a time when he is young enough, human enough, and virile enough to need and deserve the love, understanding, help, and cooperation of a good wife. The young wife of today does not seem to realize the wonderful opportunity Ae has to contribute to the development of her husband, her children, and her­self, and to society as a whole. No longer need she be merely a cook, housekeeper, and baby factory but through her husband she can help-no-assure a longer, happier, more fruitful and disease-free life for her children and all other children.

I suggest that those wives of gradu­ate students who are dissatisfied with their lots sit down in their "substand­ard" housing and consider their chil­dren. How many diseases that would have killed them 20 years ago are they now protected against? Does the as­surance that they will probably never labor for breath in an iron lung comfort her? Does the fact that, in the span of 100 years, mothers lost in childbirth went from 50% down to almost noth­ing, give her cause for joy? As she considers her "substandard student liv­ing" can she find anything sdenoe has given her? Her aluminum pots, nylons, Salk vaccine, antibiotics, automobile (may be old, but ever try riding a horse to the supermarket?), soap, paints (nail polish included), TV set,

10 C&EN MARCH 17. 1958

rtoctss

MVMON

Safeguard purity

"U. S." Unitized Mill with ex-. clusive "no-croop" roll; availa-ble In singl· or mvlH-tfer wnHs to nonolo fort of 99 pint to 3i4

U. S. S T O N E W A R E A K R O N 9 O H I O

"U.S." JAR MILLS . . . for Dependable

Coniinuous Service

Neville Chemical Company · Pittsburgh 2 5 , Pa.

NEVILLE 1 . 2 . 3. 4. S. 6. 7. S. 9. 10. 1 1 . 12. 13. 14. I S . Please send necessory sample or samples of Neville products neces­sary for expérimentation.

Name

Company

Address.

Title

NC-34.CN

M A R C H 17, 1958 CAEN 11

Without obligation to me, pleas· tend formula or formuloe checked below.

VIBRATING SCREENS

Pulsatino,

Concentric Action

do an efficient, dependable job of sizing, separating, dedusting and dewatering

SYNTRON offers α complete l ine of Vibrat ing Screens in a range of sizes and styles for practically every screening problem — fine, medium and coarse - dry or wet — f rom l ight capacitie* to heavy tonnages.

SYNTRON Vibrat ing Screens are designed and built for long, depend· able service and combine high cap­acity output w i th qual i ty control of materials. They are compact and functional in design, a l lowing more f lexibi l i ty of installation and keep moving parts to a min imum for sim­ple, low cost maintenance.

SYNTRON Vibrat ing Screens are backed by more than a third of a century of experience in the materials handl ing f ield.

SYNTRON'S years of experience are avai lab le to you. Send details of your screening problem to our app l i ­cation engineers for recommenda­tions. C H >8

Equipment of Prooen Dependable Quality

LETTERS

i.ul io. electric l ights are, of course, but a M IL i l l sample of .111 endless list.

I further suggest that she then lake her place b»*side her husband ani l groxx w i t h h im. That she use her preseme near a university to study ( I ' m sure a neighbor w i l l baby-sit 1CM a couple of hours three times a Λ eek ), to mature, and to equ ip h'Tsell to take he; p la te beside Mrs. Salk. Mrs. Paul ing. Mrs. (•lasstoue, and Mrs. O m a n t . The pos­sibility exists that in doing so the xvoiki might never have to worry about inuseular dystrophy, cancer, or the oi l supplv again. It is not "Daddy 's P h D . " that counts, but the knowledge and wisdom that Daddy might b r ing to the wor ld of daddies and mommies and l i t t ie box s and girls. The knoxvl-edge Pasteur gave us xvill last as long as a ch i ld needs a glass of mi lk. Hut much remains to be done. The knoxvl-edge xxe now have points to even more xxonders. To br ing these xvondcrs into reali ty, xve need men ami tvomru of dar ing and imaginat ion. learning, fore­sight, ai.d devot ion to d u t ) .

\V l I .11\M D. Cl . \HK /.(»v .\liinti*\. V . M.

Help for Students Dv XH Sue.

John O M . Bockris i C f c K N . Dec. 2 . I<)">7, page I I ) and Fred V. Crau < ( & K \ , Jan. 1 ,. page S) r igh t fu l l y comment on the financial struggle of our science students and point out the Russian system of education in proies-siens, wh ich they f ind admirable. Hut they fai l to see the sad side of human l i fe and labor throughout Soviet-ruled countries. People are forced to Λη abject slavery, they work long hours at starvation wages, and yet they pay heavy taxes and make "vo lun ta ry " con­tr ibut ions th iough lack of c lo th ing, shot's, proper dwe l l ing , and other neces­sities, thus suppor t ing the pr iv i leged classes of rulers and students.

Can xve emulate that system? W e must find some happier balance. W e must not forget or neglect our moral standards, patr iot ic pr inciples, and the spirit of sacrifice îo a r ightous cause on

wh ich our strength is founded.

No doubt our deserving students

and devoted teachers need all the help

and encouragement xve can give, and it

was good to read some pract ical sug­

gestions by Ricardo R. Stone ( C & E N ,

Jan. 13. Page 3 ) .

H. H. CHAKMAKJIAN

Arlington, Mass.

1 2 C&EN M A R C H 17, 1958

SYNTRON

Screening Feeder

Unbalanced Pulley

Other SYNTRON Equipment dilgifd to Jncroos· production,

«M* nrtwf uerittia costs, Imorovm prode^ts Vibrators Rectmer»

(bin., hopper», chute.) (Silicon and Senium) Vibratory Feeder» <>·« to d< Selenium Rectifier Unit» Vibratory Screen» Electric Heotine Ponel» Shaker Conveyor» «ectric Heating Element»

Vibratory Elevator Feeders Sinoated Wire»

Weigh Feeder» Shaft Seal» Pocker» and Joher» Electric Hammer» Hopper Feeder» Concrete Vibrator» Lapping Machine» Poper Joggers

Ο » upie ie immm w · be gtod to work with ye» In « • M e * * the proper equipment for your operation.

Call yew aaar·»* Syntrom nprmwuhrtW· • »«, M M InformcrHoA writ· tor compta· catalog . . y*ec

SYNTRON COMPANY 4 1 6 L e x i n g t o n A v e n u e H o m e r C i t y , P e n n a .