ANATOMY OF A MONODACTYLOUS FOETUS 427 



as far as the duodenum, then turns suddenly back on itself and 

 ascends in the great omentum against the stomach to its upper 

 end, then turns sharply down on the body wall, loses its mesen- 

 tery and runs on the wall to the brim of the pelvis, where it 

 turns suddenly into a large loop extending up again as high as 

 the liver before turning to come down into the rectum. 



Diaphragmatic hernia seems to be a fairly common condition 

 as Ballantyne ('04) collected one hundred cases in the literature 

 from 1888 to 1900. It is a peculiar coincidence, that in one of 

 those cases, just as in this present one, there was also absence 

 of the ulna. This is all the more interesting because Ballan- 

 tyne states that associated malformations occur less frequently 

 in conjunction with ulnar defects than with defects of other 

 bones in the limbs. 



In bringing this study to a close I wish to very cordially thank 

 Prof. J. Playfair McMurrich for providing the material for the 

 work and also for his valuable, kindly criticism of this paper 

 during its preparation. 



May 1st, 1917. 



