Book reviewed in this article:Die Fusarien. By H. W. Wollenweber and O. A. Beinking.Biological Processes in Tropical Soils. By A. Steven Cokbet.Problems in Soil Microbiology. By D. Ward Cutler and Lettice M. Crump.Limnology. By P. S. Welch.Plant Viruses. By Kenneth M. Smith.Heredity and the Ascent of Man. By C. C. Hurst.A Text‐book of Mycology. By E. A. Bessey.The Arachnida. By T. H. Savory.Garden Science. By John Grainger.Plant Physiology. By Meieion Thomas.
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