This volume, now in its fifth German edition, is a textbook of sanitation and hygiene to which various authorities have contributed. The chapters deal with climate, housing, ventilation, heat, light, water, sewage, hospitals, schools, industry, nutrition, infectious diseases and disinfection. The book is exceptionally complete and contains a vast amount of important data. It is, in every sense of the word, a practical guide to its subject. Much of the material is in outline form.