Onanism display'd being, I. an enquiry into the true nature of Onan's sin. II. of the modern Onanists. III. of self-pollution, its causes, and consequences; with three extraordinary cases, of two young gentlemen and a lady, who were very much addicted to this crime. IV. of nocturnal-pollutions natural and forc'd. V. the great sin of self-pollution, with the judgment of the most eminent divines upon this subject. VI. a dissertation concerning generation, with a curious description of the parts, and of their proper functions, &c. according to the latest, and most approv'd anatomical discoveries