Originally published during the early part of the twentieth century, the Cambridge Manuals of Science and Literature were designed to provide concise introductions to a broad range of topics. They were written by experts for the general reader and combined a comprehensive approach to knowledge with an emphasis on accessibility. The Individual in the Animal Kingdom by Julian Huxley was first published in 1912. The text contains an interdisciplinary discussion of individuality in nature, taking influence from both biology and philosophy.