Chiefly reprints from various scientific periodicals.

Laboratory Exercises in Zoology serves as a teaching aid for students studying for Advanced level Zoology or Biology. This book provides exercises concerned mainly with physiology and some dissection techniques. Organized into 12 parts, this book begins with an overview of diffusion of molecules or ions from a region of high concentration to a region of relatively low concentration. This text then discusses the breakdown of complex molecules, which is achieved by a series of hydrolyses catalyzed by the digestive enzymes produced by the glandular cells of the digestive system. Other chapters consider the various stages involved in making permanent stained preparations. This book discusses as well the requirements for animals in the laboratory. The final chapter deals with the rate of growth of an organism. This book is a valuable resource for students studying zoology and biology. Teachers and biology laboratory technicians will also find this book extremely useful.

Scientific experiments using animals have contributed significantly to the improvement of human health. Animal experiments were crucial to the conquest of polio, for example, and they will undoubtedly be one of the keystones in AIDS research. However, some persons believe that the cost to the animals is often high. Authored by a committee of experts from various fields, this book discusses the benefits that have resulted from animal research, the scope of animal research today, the concerns of advocates of animal welfare, and the prospects for finding alternatives to animal use. The authors conclude with specific recommendations for more consistent government action.

Laboratory Studies in Animal Diversity offers students hands-on experience in learning about the diversity of life. It provides students the opportunity to become acquainted with the principal groups of animals and to recognize the unique anatomical features that characterize each group as well as the patterns that link animal groups to each other.