EPOCHS IN BIOLOGICAL HISTORY 381 



chiefly to animals, his pupil and co-worker, THEOPHRASTUS 

 (370-286 B.C.), made profound studies on plants. Theo- 

 phrastus not only laid the foundations but also gave sug- 

 gestions of much of the superstructure of botany; an achieve- 

 ment which entitles him to rank as "the first of real botanists 

 in point of time." 

 Before leaving the Greeks we must mention HIPPOCRATES 



FIG. 196. Theophrastus of Eresus. 



(460-370 B.C.) , the Father of Medicine. Writing a generation 

 before Aristotle, at the height of the Age of Pericles, Hippo- 

 crates crystallized the knowledge of medicine into a science, 

 dissociated it from philosophy, and gave to physicians "the 

 highest moral inspiration they have." 



The history of medicine and of biology as a so-called pure 

 science are so inextricably interwoven that consideration of 

 the one involves that of the other. Indeed the physicians 

 form the only bond of continuity in biological history be- 



