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THE subject-matter in the fourth edition of this familiar text-book has not been materially changed, though in the light of most recent research it has been brought up to date. It is a pity that the subject-matter has not been modified, for it is based essentially on the morphological concept. Physiology receives scant treatment ; the chapter on evolution and heredity is wellnigh out of date and genetics is practically ignored. Research on the more practical side of botany, and especially strictly economic botany, is going on apace, especially in the country of origin of this book, yet it scarcely receives a menticn.A Textbook of General Botany:for Colleges and Universities. By Richard M. Holman and Prof. Wilfred W. Robbins. Fourth edition. Pp. xvii + 664. (New York: John Wiley and Sons, Inc. ; London: Chapman and Hall, Ltd., 1938.) 20s. net.