A Guide to Human Parasitology, Blacklock and Southwell, Revised by Davey, T.H., O.B.E., M.D., D.T.M., Professor of Tropical Hygiene, Liverpool School of Tropical Medicine, formerly Professor of Tropical Diseases of Africa; and Director of the Sir Alfred Jones Laboratory, Freetown, Sierra Leone, West Africa. 7th edition, viii + 223 pages, illustrated, Baltimore, The Williams and Wilkins Company. 1961. $7.00.

Leeches (Hirudinea) Their Structure, Physiology, Ecology and Embryology, by K. H. Mann, Department of Zoology, The University of Reading, with an appendix on the Systematics of Marine Leeches, by Professor E.W. Knight-Jones. Vol. II, viii + 201 pages, illustrated. New York, Oxford, London, Paris, Pergamon Press. 1962. $7.50.

Animal Parasitology, Laboratory Manual, by Elmer R. Noble, Ph.D., Professor of Zoology, University of California, Santa Barbara, and Glenn A. Noble, Ph.D., Head, Biological Sciences Department, California State Polytechnic College, San Luis Obispo, California. 120 pages, illustrated. Philadelphia, Lea & Febiger. 1962. $3.50.

Abstracts of Research Literatures.