The Handbook of Ethological Methods, Philip N. Lehner. Garland STMP Press, New York (1979)

jumps from variability between families, genera, and species down to individual variability. In the end, I was not sure what point Mitchell wanted to make. Finally, I found numerous typographical errors, and occasional errors and distortions in the facts presented. DEVRA G. KLEIMAN Department of Zoological Research, National Zoological Park, Washington, D.C. 20008. The Handbook of Ethological Methods is well presented and illustrated, and it is arranged in a logical manner so that different topics can easily be found. I have no hesitation in recommending this book to both students and experienced research workers in ethology. TREVOR B. POOLE Department of Zoology, University College of Wales, Penglais, Aberystwyth SY23 3DA.