Scanning electron microscopy: application in the identification of diatoms in cases of drowning.

A simple and rapid method is described for processing organ and water samples for the identification of diatoms so that they can be studied and recorded for taxonomic and diagnostic purposes. Samples are treated with concentrated nitric acid; the fluid obtained is centrifuged, and its sediment is dried, coated, and examined under the scanning electron microscope. The method does not alter the morphology of diatoms and allows the study of freshwater and seawater species present in the organs of bodies found in the water, making possible the diagnosis of drowning under specific conditions.     

Book reviews

Transborder Data Flows (Proceedings of an OECD Conference) Edited by Hans‐Peter Gassmann North Holland (Elsevier Science Publishers) 1985, US$74.00

Plastic and Electronic Money: New Payment Systems and Their Implications Patrick Frazer Woodhead Faulkner Limited 1985 £35

A User's Guide To Computer Contracting: Forms, Techniques and Strategies Davis, Allen, Bowman and Armstrong Harcourt Brace Jovanovich 1985, $75

Legal Protection of Computer Programs and Data C. Millard Sweet & Maxwell/Stevens 1985, £24

Piracy of Phonograms Gillian Davies ESC Publishing Ltd. 1986. 2nd edition. £17.95.

Biotechnology and Patent Protection—An International Review F. K. Beier, R. S. Crespi and J. Straus O.E.C.D. 1985, £5

Protecting Privacy in Two‐Way Electronic Services David H. Flaherty Mansell Publishing Company 1985, £23.50

High‐Tech Espionage Jay Tuck Sidgwick and Jackson Ltd 1980, £10.95     

Book reviews

The Imaginary War: Understanding the East‐West Conflict By Mary Kaldor. Oxford: Basil Blackwell. 1990. 290 pp. £19.95.

The Nonsuperpowers and South Africa ‐ Implications for U.S. Policy. By Richard J. Payne. Indiana University Press. 336 pp. $35.00.

Elites and the Idea of Equality: A Comparison of Japan, Sweden, and the United States. By Sidney Verba, Steven Kelman, Gary R. Orten, Ichiro Miyake, Joji Watonuki, Ikuo Kabashima, G. Donald Ferreer, Jr. Harvard University Press. 276 pp. £10.25.

Controlling the Sword: The Democratic Governance of National Security By Bruce Russett. 261 pp. £17.95.

America's Germany: John J. McCloy and the Federal Republic of Germany By Thomas Alan Schwartz. Harvard University Press: 1991. 404 pp. £23.95.