Aggressive Behaviour

to more advanced techniques are provided at appropriate places throughout the text; and a comprehensive set of examples is provided at the end of each chapter. An intuitive rather than theoretical approach is stressed by the authors and thus some methods are presented almost entirely in "cook-book" style. With the exception of the material on analysis of frequencies presented in chapter 16, the text material is well selected, clearly written, and remarkably error free. A novel feature of the text is that many of the examples are presented in boxes that contain all the necessary steps, including intermediate computational results, from the initial set-up of the problem to the final results. This feature should be extremely useful to the applied biologist. Mathematical proofs, detailed instructions for the operation of desk calculators, and a set of fortran computer programs, including test data and sample results, are presented in separate appendices. A companion set of tables is bound separately from the text.