ON THE ANATOMY OF THE 



to the liver. The head of one was traced through 

 a ramification of the latter duct, at least half an 

 inch within the liver ; and two had penetrated a 

 considerahle way through the pancreatic duct, 

 which they completely blocked up. Along with 

 those observed in the biliary ducts, were several 

 young ones about half an inch in length, and of a 

 pale flesh colour. Linnaeus and others, have men- 

 tioned the occurrence of lumbrici in the pancreatic 

 duct as not uncommon ; but their penetration 

 through the biliary ducts is a rare occurrence. 

 With respect to these worms, it is difficult to de- 

 cide, whether they found their way from the intes- 

 tines a p ter the death of the animal, or contributed 

 to its dissolution by their unusual situation. 



In structure, the great intestines generally re- 

 semble those of man. The coecum is large and 

 distinct ; and the appendix vermiformis, which is 

 wanting in the baboon, is remarkably long. It is 

 not, however, hanging loose in the abdomen; but is 

 gathered into spiral convolutions, by a separate 

 mesenteric expansion peculiar to itself. The ap- 

 pendix, measured along its convex edge=7.7 inches ; 

 and the circumference of the great arch of the colon* 

 when inflated moderately = 5.7 inches, while that 

 of the caput coli, at its greatest diameter = 8 in- 

 ches. The attachment of the coecum to the right 

 side is just as in man ; but it is quite free in the 

 baboon. 



