m 





ORIGINAL FIGURE OP PEYER's PATCHES C IN THE SMALL, AND 

 SOLITARY FOLLICLES E IN THE LARGE INTESTINE. 



FIGURE SHOWING LENGTH, DIAMETER, AND 

 OTHER CHARACTERS OF THE INTESTINAL 



CANAL OP SOME ANIMALS. 

 OBSERVE PEYER'S PATCHES N. GREW. 



patches in a rat and rabbit. In fact these old figures are particularly 

 instructive, as they give the length, size, and proportion of the several 

 parts of the intestinal tract in a way that appeals to one far more 

 vividly than the mere citation of numerical data. Peyer also wrote 

 an excellent account of the anatomy of the intestine of the fowl, and 

 also on Merycologia, sive de Ruminantibus (1685), or Rumination. 



Born at Dieffenhofen in the same year as Peyer, JEAX 

 CONRAD BRUNNER, who studied at Strasburg, discovered in the 

 wall of the duodenum of the dog and man, about 1672, the glands that 

 bear his name. He subjected the gut to the action of boiling water. 

 (De Glandulis in duodena intestino detectis, Heid. 1687). He published 

 his results on the pancreas in 1682 (Experimenta nova circa pancreas}. 

 In 1687 he became Professor of Medicine in Heidelberg, a post he 

 held for a year, and then settled in Mannheim, and later on was 

 ennobled as " Brunn von Hammerstein," and died in 1727. His in- 

 augural dissertation at Heidelberg is entitled Dissertatio inauguralis de 

 Glandule Duodeni. He speaks of these glands as yielding a juice 

 like that of the pancreas and of them as a pancreas secundarium. 



