Synopsis nosologiae methodicae.

This work made Cullen’s reputation. In it he divided diseases into fevers, neurosis, cachexias and local disorders. Cullen was the foremost British clinical teacher of his time, one of the first to give clinical lectures in Great Britain. (See also No. 76.) Several English translations are available. Digital facsimile from the Internet Archive at this link. Translated as Nosology: Or, a systematic arrangement of diseases, by classes, orders, genera, and species ... and outlines of the systems of Sauvages, Linnaeus, Vogel, Sagar, and Macbride (London, 1800). Digital facsimile of the 1800 edition from Google Books at this link.