An Introduction to Zoology

Abstract

THERE are some interesting distinctive features in this new introduction to zoology. Only a few types are studied (all of them Invertebrates); they are discussed so as to illustrate the principles of the science; the morphological aspect is not specially emphasised, but is coordinated with the physiological aspect (which, of course, includes the study of inter-relations and behaviour). From a mapping out of the subdivisions of the science (which admits of much improvement), the author passes to the characteristics of living organisms (where the autonomy of biology seems too easily surrendered to the mechanists), thence to the cell, and to the Protozoa. After an introduction to the Metazoa, which makes the significance of the transition admirably clear and introduces some exceedingly useful original diagrams, the book goes on to Hydra and other Cœlenterates, Unsegmented Worms, the Earthworn and Annelids, the Crayfish and Arthropods, the Honey Bee (which is admirably treated), and bees in general. Then follows a chapter on the history of zoology (entitled “Historical Zoology”), and the book ends with a terse consideration of the factors in evolution and related questions. There is a very useful bibliography, and a glossary.