718 BOOK REVIEWS

Again, a few of these have since appeared in the refereed literature, but the style ofthe published papers is frequently not as clear or explanatory.

To place the different turbulent media in better physical perspective, a numberof reviews have been included that do not specifically address dynamical topics:McKee and Slavin on photoionizion processes in halo gas, Braun on large scale HI distributions in galaxies, Walterbos and Tufte et al. on ionized gas. Finally, I wantto call special attention to the trio of papers on scintillation by Avila and Vernin, onterrestrial seeing, and Cordes and Spangler, on interstellar scintillation, that presenta valuable juxtaposition of how different environments require similar techniques.

My only real complaint is that there is no index, as often happens with modernconference proceedings, and the lack is especially felt when dealing with such awide range of applications as discussed here. The greatest value of a review volumeis to provide direction for future work by displaying differences and highlight-ing similarities among diverse phenomena and theoretical treatments in a moreextended fashion than one can find in a single review article. The utility of thebook is therefore hampered by forcing the reader to search through each paperwithout a guide – an index directs where random walking is ineffective. The lackof guideposts is even stranger since the abstracts of the contributed and posterpapers are available through the ADS and therefore searchable in a way the printedreview articles are not.

The final impression left by this collection is the diversity of environmentsin which apparently similar phenomena are observed and serves to highlight theuniversality of cosmic turbulence. Complaints of presentation aside, this is a fineaddition to the literature.

Dept. of Physics and Astronomy, STEVEN N. SHORE

Indiana University South Bend, U.S.A.

J. Andersen (ed.),Transactions of the International Astronomical Union, VolumeXXIIIB, General Assembly, Kyoto 1997, 740 pp., Kluwer Academic Publish-ers, Dordrecht, The Netherlands, 740 pp., 1999, hardback, NLG 320.00, USD192.00, ISBN 07923-5588-1.

The triannual Proceedings of the IAU contain the reports of the Assembly, of theCommission meetings, the Statutes and Bylaws, membership of nearly 59 commis-sions and the names and addresses (including telephone, fax and e-mail addresses)of nearly 8000 members of the IAU.

SRON Laboratory for Space Research, CORNELIS DEJAGER

Utrecht, The Netherlands