Arthur Shipley (1861–1927) was a British zoologist who held the position of Vice-Chancellor at the University of Cambridge from 1917 to 1919. First published in 1925, as the second edition of a 1923 original, this book was written by Shipley to provide students of elementary biology with an understanding of the unity and interconnectedness of life. The text attempts to bring out the fact that plants and animals are at one in being alive and makes clear the intimate association of both with their environment, whether it be the air, the soil or the sea. Numerous illustrative figures are included. This book will be of value to anyone with an interest in the history of education and Shipley's writings.