An early, groundbreaking and very influential treatise on sexual psychopaths, providing a large number of case studies, with,humourously, most of the naughty bits in Latin [at least in this edition]. Psychopath is used her in the clinical sense, so it doesn't only include rapists and sexual sadists, but also all sorts of fetishes, e.g., men who can only achieve orgasm in front of a woman in an apron, no apron, no arousal. The book is by today's psychological standards very funny, as much in the way of psychological problems is related back to too much teenage masturbation, or 'genetic weakness' -- still a fascinating read into early psychological theories.

Passed book on to a student in psychology c. 1995

A different edition is available here: https://en.wikisource.org/wiki/Index:Psychopathia_Sexualis_(tr._Chaddock,_1892).... ( )