The indispensability of plants, the ornamental qualities they possess, the mysteries which they encompass are all touched upon in this concise text. Margaret Hyde distinguishes between various plant families, describes their mechanisms, enumerates their functions for men, and even considers what the nature of plant life may be on other planets. At a time when man is painfully aware of an impending food problem, this book with its list of simple and conclusive experiments and its introduction to botanical studies on various levels is both informative and constructive.