Theses has subsequentes de artis medicae definitione & divisione Praeside Viro Clariss. D.D. Thoma Erasto, syn Theō defendere conabitur M. Theophilus Maderus, A. D. VI. Kal. Sextil. hora & loco consuetis

XVIII.
Hygienic medicine considers the non-natural things, which do not make up the essence of our body, but coming from outside, necessarily alter it; if they are used legitimately, they can preserve health. Hence, they are called by Galen the preservative causes αἴτια φυλακτικὰ protective causes (On the Medical Art, chapter 85).

XIX.
Six kinds of these are enumerated: Air, Food and Drink, Motion and Rest, Sleep and Waking, Excretion and Retention, and the Affects of the Mind.

XX.
Therapeutic medicine Θεραπευτικὴ pertaining to healing delivers the method of eradicating diseases through diet, drugs, and surgery.