Elementary Textbook of Economic Zoology and Entomology


Book Description

Excerpt from Elementary Textbook of Economic Zoology and Entomology The point of view from which this book is written is explained in its first chapter. For that matter it is indicated clearly by the title. If the study of zoology is being neglected in schools for the alleged reason that it is not a useful study, the neglect is based on an unsound reason. For zoology is useful, and not in one way alone, but in two ways; and both of these in addition to its pedagogic value as a study which develops accurate personal observation and independent personal attainment of conclusion. Zoology is first of all useful in the way so often stressed by Huxley, as a study that gives us a sounder basis for our own life by showing the demands of Nature on animal life in general and the kinds of responses to be made to these demands. In other words it is quite specially a branch of science that can help us largely as a guide to living in conformity to natural laws. Zoology is also useful in a more obvious and commercially ratable way, by revealing the precise relation which many animals bear to us in their attitude of friends to be cultivated, or foes to be fought. Injurious insects, alone, cause this country an annual loss of a billion dollars. A general knowledge of insect life and an intelligent and vigorous application of this knowledge can save the nation half this loss. To the teacher intending to use this book as class guide there is due a word of explanation. The authors have attempted to make the book an introduction to general zoology as well as to that specific phase of it called economic. The first chapters are therefore of a nature to introduce pupils to general facts of animal structure and life. They are arranged on the basis of accepted pedagogic principles. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.










Economic Zoology


Book Description







ECONOMIC ZOOLOGY


Book Description

The present book is a novel attempt to make available the students an exhaustive, interesting and valuable information on the subject of Economic Zoology. All kinds of animal pathogens such as protozoans, helminths, nematodes, mites and ticks and household insects, directly or indirectly causing diseases in other animals including humans, have been described in detail covering every aspect of their life history along with the symptoms appearing on the hosts, and their prevention, control and cure. Furthermore, along with the animal pathogens mentioned above, plant pathogens, such as insects, acting as pests of a variety of crops have also been described in full detail. Apart from the harmful effects, animals are also beneficial to mankind. This seems to be justified when we go through the chapters relating to apiculture, lac culture and sericulture along with fisheries, prawn culture, pearl culture, cattle farming, pig farming and poultry farming. Key Features • Chapters enriched with photomicrographs present a realistic description. • Exclusive life cycle diagrams of pathogens are helpful in understanding important events of their life. • Exhaustive coverage of the subject matter helps students to understand the concepts with clarity and provide a wide range of information in a single volume. • Chapter-end review questions help students to prepare for the examinations and assess their subject knowledge.