REVIEWS

Book reviewed in this article: The Virus: Life's Enemy. By Kenneth M. Smith. A Survey of Insecticidal Materials of Vegetable Origin. Edited by H. J. Holman. The Breeding of Herbage Plants in Scandinavia and Finland. Vegetative Propagation of Tropical and Sub‐Tropical Plantation Crops. By G. St Clair Feilden and R. J. Garner. The New Systematics. Edited by Julian Huxley. Plant Microtechnique. By D. A. Johansen. A Manual of Aquatic Plants. By N. C. Fassett. The Orientation of Animals: Kineses, Taxes and Compass Reactions. By G. Fraenkel and D. L. Gunn. Mechanisms of Biological Oxidations. By D. E. Green. Statistical Calculation for Beginners. By E. G. Chambers, M.A. Embryos and Ancestors. By G. R. de Beer. Fundamentals of Biology. By A. W. Haupt. Principles of Animal Biology. By Lancelot Hogben. Man on his Nature. By Sir Charles Sherrington. The Advance of the Fungi. By E. C. Large.