ABDOMINAL VISCERA IN MAN. 183 



part of the duodenum, was only recorded in 10 cases. Import- 

 ance should not be attached to this small number, as it is only 

 very likely that, with the numerous and very tedious measure- 

 ments, small pouches were overlooked. Those in which it was 

 of any size or importance were certainly recorded and drawn. 

 Of the 10 cases noted only 8 were drawn. In cases 14 and 38 

 the pouch was 5 cm. and 4-5 cm. deep respectively. It was 

 low down in case 29. Case 25 presented a considerable fold 

 with a shallow fossa ; whilst case 26 presented, perhaps, the 

 most typical example of the pouch. Cases 24, 2, and 19 pre- 

 sented superior duodenal pouches. In case 24 a fold with its 

 concavity downwards passed from the lower end of the left 

 kidney to the outer side of the fourth of the duodenum : the 

 pouch was sharply defined, and was 2 cm. deep. In 2 and 19 

 the mouth of a ponch is indicated as passing upward to the 

 right beneath the fourth of the duodenum. 



In case 26 a fold, situated below the typical inferior duodenal 

 pouch mentioned above, passed from the beginning of the fourth 

 part of the duodenum on to the peritoneum over the vertebrae 

 to the left, bounding a small pouch directed upwards partly 

 behind the duodenum. 



The accessory fold shown in case 38 (fig. 9) which passed 

 from the summit of the duodeno-jejunal flexure was evidently a 

 secondary one, and was apparently produced by the dragging of 

 this part of the intestine upon the lower layer of the transverse 

 mesocolon. It was not dissected. 



A meso-colic fold, containing a branch of the inferior mesen- 

 teric artery, was well marked in case 8. 



The Small Intestines. 



The investigation of the general or relative position of the 

 various coils of the small intestines is, and must remain, a 

 matter of much difficulty. Although it may not be difficult in 

 the infant, in a good proportion of cases, to point to some 

 general arrangement of the intestinal convolutions, yet, with 

 the changes in diet, the increase in length of the intestines, and 

 the manifold displacing influences to which they are exposed in 



