Reviews

An Introduction to Bacterial Physiology. By E velyn L. O ginsky and W. W. U mbreit.The Cell Nucleus. Edited by J. S. M itchell.Behaviour and Evolution. Edited by anne R oe and G eorge G aylord S impson.The Mango. By L. B. S ingh.The Balkan Lake Ohrid and its Living World. By S inia S tanković.An Introduction to the Biology of Micro‐organisms. By L. E. H awker , A. H. L inton , B. F. F olkes and M. J. C arlile.The Chemistry of Nucleic Acids. By D. O. J ordan.The Structure and Function of Muscle. In three volumes—edited by G. H. B ourne.Planzenpathogene Bakterien. By C. S tapp.Physical Chemistry for Students of Pharmacy and Biology. 2nd ed. By S. C. W allwork.The Control of Growth and Form. A Study of the Epidermal Cell in an Insect. By V. B. W igglesworth.