Ecology is the study of living beings in their environment, especially how they relate to each other. Broadly speaking, all the living beings and their direct or indirect relation to the non-livings, constitute the Eco-system. For a healthy life, it plays a vital role. And for a sound Eco-system a few precautions, taken by man, are necessary. This multi-volume encyclopaedia on Ecology is a precious present to every human being, as it explores various aspects of this crucial sector of life. Prepared with utmost care, it could, undoubtedly, serve as a saviour of humanity and all that surround it.

A number of reference works have been published in recent years that include, but are not restricted to, biographical information about scientists. This volume is designed differently and is intended to meet several specific needs. It provides personal and professional information concerning scientists, including some whose accomplishments are undeservedly obscure. We have included scientists from Academics and laypersons, professionals and amateurs, all are figured in this volume.

Evolution is an interdisciplinary science and extends to diverse fields such as Zoology, Botany, Earth Science and Geography. The present title is an effort to summarize the basic concept and principles of the subject, to present the elementary factual information with which a person to be competent in the field should be familiar, and to show how these principles and facts may be applied in a practical way to the interests and welfare of man. Although the book relates especially to animals, enough material given covering plants to bring out their essential place in the system of nature. The present title is intended for beginners who wish to understand the fundamentals of Evolution. The whole gamut of subject has been described in a simple and systematic manner suited for readers who have not been exposed sufficiently to the subject. It is an adequate text for all requirements in this area for the students of all Indian Universities. The primary aim throughout has been clarity, simplicity and the high standard. It will be a valuable study aid to teachers, students and research scholars in the related field.

Origin of Life, as is suggestive from the name of the title, gives a vivid and categorical scientific account of the origin and evolution of life on the earth. This book is consisted of the following Chapters. CONTENTS The origin and Evolution of the Solar System; The Origin of the Earth; Primordial Oceans; Water; The Chemical Elements of Life; Oxygen; The Origin of Life; The Evolution of the Earliest Cells; Distribution of Animals; Evolution by Dobzhansky; Evolution of Unicellular Organisms; Origin of Metazoa; The Search for Life on Mars; Life Outside the Solar System; The Anatomy and Relationships of Dinosaurs; etc.