Multi-volume work on science edited by Francis Rolt-Wheeler. The sixth volume is on Zoology written by Dr. WM. D. Matthew and on Botany written by Marion E. Latham. The section on Zoology examines the development, evolution and distribution of animals. It further discusses types of animals - invertebrates and vertebrates. The section on botany touched on early development of botany and delved on structures and reproduction of plants. Development of the study of morphology and plant cell anatomy and variations were also examined.