466 PHILOSOPHICAL TRANSACTIONS. [aNNO I788. 



cavity of that intestine. The splenic vessels were passing along the upper edge 

 of the pancreas to the right side, corresponding to the change of situation in 

 the pancreas and spleen. 



The stomach was situated on the right side, partly hid by the small lobe of 

 the liver passing to the left, and terminating in the pylorus, rather on the left 

 side of the spine. The duodenum took, a most singular course; it first passed 

 to the right side, behind the small end of the stomach ; it then turned on itself, 

 towards the left side; it afterwards took its proper sweep to the right side, passing 

 behind the superior mesenteric artery and mesaraica major vein. The mesentery 

 began to be formed on the right side, instead of the left, as in ordinary cases. 

 The ilium terminated in the great intestine on the left side, and there was in it 

 a diverticulum of considerable size, a lusus not unfrequently occurring. The 

 caecum was situated on the left psoas magnus and iliacus internus muscles. The 

 transverse arch of the colon passed from the left to the right side of the body, 

 and the sigmoid flexure crossed over the right psoas, to get into the cavity of 

 the pelvis. The kidneys had their vessels transposed; the renal capsules had un- 

 dergone no change, as no variety could be produced by a transposition. 



The aorta passed between the crura of the diaphragm into the cavity of the 

 abdomen, and adhered in its course to the spine on the right side of the vena 

 cava inferior. Its branches were directed in their course corresponding to the 

 peculiar situation of the viscera. The splenic and coronary arteries were passing 

 to the right side, and the hepatic artery obliquely to the left. The superior and 

 inferior mesenteric arteries were directed to the right side. There was no change 

 in the spermatic arteries, any transposition in the testicles, if such a thing could 

 take place, not being capable of affecting them. The lumbar arteries could also 

 undergo little change, except that the left lumbar arteries must necessarily, from 

 the peculiar situation of the aorta, be the longest. The vena cava inferior per- 

 forated the tendinous portion of the diaphragm, and adhered in its course to the 

 spine on the left side of the aorta. 



The right emulgent vein was much longer than usual, passing from the right 

 kidney before the aorta to terminate in the vena cava superior; and the left 

 emulgent much shorter, passing from the left kidney to the vena cava, which 

 was situated on the left side of the spine. The right spermatic vein was found 

 to open into the right emulgent, and the left into the vena cava inferior, about 

 an inch under the left emulgent. The vena portarum was changed from its 

 natural course, passing obliquely upwards to the left side, and its large branches, 

 viz. the vena splenica, mesaraica major and minor, were all directed towards the 

 right side of the spine. There was no change in the intercostal nerve within 

 the cavity of the abdomen; nor does it seem to be capable of being affected by 

 any transposition of parts. We see then, that there was a complete transposition 



