REVIEWS

Book reviewed in this article: Flora of Iraq . Volume I. Introduction to the Flora . Ed. by Evan Guest, with assistance from Ali Al‐Rawi. Principles of Industrial Microbiology . By A. R hodes and D. L. F letcher . Movement of Water in Plants . By G. E. B riggs . Botanical Monographs (Ed. by J. H. B urnett ) Morphogenesis and Microscopic Cytochemistry of Marine Pyrenomvcete Ascospores . By P. W. K irk . Primary Productivity of Aquatic Environments . Ed. by C. R. G oldman . Fantastic Trees . By E dwin A. M enninger . Specific Replant Diseases . By B. M. S avory . The Plastids . By J. T. O. K irk and R. A. E. T ilney ‐B assett . Light as an Ecological Factor . Ed. by R. B ainbridge , G. C. E vans and O. R ackham . The Structure and Life of Bryophytes . By E. V. W atson .