8 PROFESSOR DAVID HEPBURN ON 



the plane of the musculus obliquus externus abdominis, and close to its pubic attach- 

 ment, the peritoneal tube passed through a muscular slit corresponding to the external 

 inguinal ring and thereafter terminated in a blind end situated close to the posterior 

 end of the testis. The length of this tube of peritoneum was 2^ inches, and its 

 testicular part formed the tunica vaginalis testis. 



Each vas deferens entered the abdomen through the internal inguinal ring, being 

 suspended from the ventral wall in a short mesentery or peritoneal sling by which each 

 vas was carried across the abdominal aspect of the hypogastric artery to the pelvic 

 surface of the urinary bladder about the level of the pubic crest. These two mesenteries 

 for the vasa deferentia formed a free transverse fold of peritoneum on the pelvic surface 

 of the urinary bladder at the level indicated. From this level the vasa deferentia passed 

 backwards on the pelvic surface of the bladder under cover of the peritoneum. On the 

 pubic aspect of the bladder there was a triangular non-peritoneal surface extending for- 

 wards from the pubic crest for If inches, at which point the ventral mesentery of the 

 bladder commenced and continued to the umbilicus. 



ALIMENTARY ORGANS. 



The stomach (see fig.) presented a single chamber situated with its long diameter 

 in the axis of the trunk. The oesophagus entered the stomach slightly to the right side 

 of the most prominent or anterior part of the fundus. The greater convexity or curve 

 was well defined, and measured 17 inches from the oesophagus to the pylorus. The 

 distance between the same points along the lesser curve was 1 inches. Each of these 

 curves was associated with the usual omenta. A very sharp bend occurred in the lesser 

 curve, 5 inches in a straight line from the oesophagus and 3 inches from the pylorus. 

 The sides of this bend were held in close apposition by the peritoneum, and the general 

 appearance produced was that of a constriction in the course of the cavity of the 

 stomach. The greatest width of the stomach on the oesophageal side of this bend was 

 5^ inches, whereas on the pyloric side of the bend the greatest width was 4 inches, and 

 opposite the bend the width was 2^ inches. The practical result of the infolding of the 

 stomach wall was therefore to produce two chambers communicating with each other 

 by an aperture considerably narrower than either of the chambers. A second slight 

 constriction was present in the pyloric section, and thus as a whole, from oesophagus to 

 pylorus, the stomach suggested three imperfectly separated compartments or chambers. 



The contents of the stomach consisted of a quantity of a thick pasty substance of a 

 somewhat light earthy colour. It was uniformly smooth, and contained no evidence of 

 bones. In all probability it represented partially digested coagulum of milk. 



The pylorus was placed in the mesial plane, and was recognisable both to the eye 

 and to the touch as a constricted ring. 



The duodenum extended from the pylorus in the form of a horse-shoe loop 1 2 to 

 1 3 inches long. It was attached dorsally in the mesial plane by a mesentery. The 



(ROY. soc. EDIN. TRANS., VOL. XLVII., 60.) 



