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The title of this book is not meant to imply that the reader can find in it a guidebook which will enable him to make posterity to order. As in most books on heredity, the central character in whom most of the gene juggling goes on is the fruit-fly, Drosophila. The aspiring parent of the human species will find here few practical hints on how to conduct himself.
Nevertheless, if the reader can put himself into an academic frame of mind he will find in this book a wealth of interesting material described in a fascinating manner. Although the conclusions are drawn from the experiments with Drosophila, the minutiæ of human morphology are discussed in a most engaging manner. The emphasis throughout is more on where you have come from than where you are going and suggests a good deal of fun in your own home to be derived from scrutinizing closely relatives who might be otherwise uninteresting.
Stressing the limitations of our present knowledge of the science of genetics, the author suggests few practical eugenic applications. Only eight pages are devoted to the 'sick mind' including feeblemindedness, schizophrenia, Huntington's chorea, etc.