Through the ages natural historians have puzzled over how animals work, wavering between a vitalist belief in a soul animating bodily functions and a mechanisti
First published in 1964, Ruth Harrison's book Animal Machines had a profound and lasting impact on world agriculture, public opinion and the quality of life of
An exploration of the physical laws governing the motion and energy of animals, written by Robert Henry Thurston in 1895. The book proposes that animals are bes