📕 "The Principles of Mental Hygiene" is a fascinating treatise by William A. White on the subject of 'mental hygiene'. Mental hygiene is the science of maintaining mental health and preventing the development of psychosis, neurosis, or other mental disorders. This volume explores the relationship between mental hygiene and psychoses, criminality, and other related problems, making it highly recommended for those with an interest in criminal psychology. Contents include: "Underlying Concepts", "Mental Mechanisms", "The Insane", "The Criminal", "The Feeble-Minded", "Miscellaneous Groups", "Miscellaneous Problems", "The Neuroses-Psychoanalysis", and "Summary". William Alanson White (1870 - 1937) was a notable American psychiatrist and neurologist. Other works by this author include: "Mental Mechanisms" (1911), "Outlines of Psychiatry" (1915), and "Diseases of the Nervous System" (1915). Many vintage books like this are increasingly scarce and expensive. It is with this in mind that we are republishing this volume now complete with the original text and artwork for the enjoyment of readers now and for years to come.