IN THE KIDNEY. 49 



as in the previous case. The animal was alive four 

 hours afterwards, and was found dead about eighteen 

 hours after the operation. The right kidney weighed 

 32 grs., and presented precisely the same appear- 

 ances as the left. The bladder was full of urine, 

 which contained no albumen. 



Exp. 3. The left kidney of a very weak small 

 animal was removed, and the aorta exposed. Some 

 difficulty was experienced in passing a thread around 

 the latter, in consequence of a great quantity of 

 citron-coloured serous fluid accumulating in the 

 wound ; it did not flow from the peritoneal cavity, 

 but was a mere oozing from, or through the vessels. 

 The blood was very poor ; its want of viscidity, as 

 felt by the fingers, was very remarkable. The aorta 

 was tied tightly, producing instantly the ordinary 

 paralysis. The animal was killed at the end of five 

 minutes ; but, from the absence of any unnatural 

 appearance in the right kidney, I did not deem it 

 necessary to examine the urine. 



Exp. 4. The aorta of a healthy young rabbit being 

 tied, produced, instantly, permanent paraplegia. The 

 left kidney was then removed, and weighed 30 grs. 

 At the end of eighteen hours, the animal was still 

 alive, but apparently at the point of death ; it was 

 then killed. The right kidney being examined, was 

 reddened in every part of its substance, and pre- 

 sented on its surface some slight spots of ecchy- 

 mosis, but it only weighed 30 grs. The bladder 

 contained about a drachm and a half of muddy red 

 urine, which held bloody coagula suspended in it. 



E 



