354 BIOLOGICAL SCIENCES AND MEDICINE XIV 



for his operations, and to the physician for his 

 diagnosis of internal disorders, became obvious, and 

 a connection was established between anatomy and 

 medicine, which has ever become closer and closer. 

 Since the revival of learning, surgery, medical 

 diagnosis, and anatomy have gone hand in hand. 

 Morgagni called his great work, " De sedibus et 

 causis morborum per anatomen indagatis," and 

 not only showed the way to search out the locali- 

 ties and the causes of disease by anatomy, but 

 himself travelled wonderfully far upon the road. 

 Bichat, discriminating the grosser constituents of 

 the organs and parts of the body, one from another, 

 pointed out the direction which modern research 

 must take ; until, at length, histology, a science of 

 yesterday, as it seems to many of us, has carried 

 the work of Morgagni as far as the microscope 

 can take us, and has extended the realm of 

 pathological anatomy to the limits of the invisible 

 world. 



Thanks to the intimate alliance of morphology 

 with medicine, the natural history of disease has, 

 at the present day, attained a high degree of 

 perfection. Accurate regional anatomy has ren- 

 dered practicable the exploration of the most 

 hidden parts of the organism, and the determina- 

 tion, during life, of morbid changes in them ; 

 anatomical and histological post-mortem investi- 

 gations have supplied physicians with a clear 

 basis upon which to rest the classification of 



