THE appearance of Lowson's well-known “Text- book of Botany” in its ninth edition is a tribute to the soundness of the principles on which the book was originally based. Now Dr. W. O. Howarth and Dr.

THERE has been little attempt at selection in this book, with the result that a great deal of material has been brought together, some of which the beginner will scarcely be able to use. Nevertheless ...