592 The Limbs as a Whole. 



The discoloured and sloughy condition of the great toe is 

 well seen, but the discolouration which existed upon the other 

 toes and on the dorsum of the foot has been removed by the 

 spirit. 



The arteries were injected with vermilion and tallow. 

 The injection has run down the anterior tibial artery as far as 

 the dorsum of the foot, but beyond that only a little has been 

 able to penetrate. The coat of the anterior tibial artery is 

 atheromatous and filled with calcareous plates the whole way. 

 On the posterior aspect, the injection has penetrated only to the 

 level of the upper third of the leg, in the posterior tibial 

 artery, and to about the middle of the leg in the peroneal 

 artery. Beyond these points both vessels are so much con- 

 tracted that the injection could not flow in them. Their coats 

 are studded with calcareous plates in a manner very similar to 

 that found in the anterior tibial artery. It may be noted, more- 

 over, that the parts near the anterior tibial artery have received 

 the injection down to, although not beyond, the ankle, whereas 

 the injection posteriorly has only reached as far as the middle 

 of the calf. G. C. 3148. 



Presented hij A. G. Miller, F.K..C.S.E., 1890. 



11. 71. Advancing- Moist Senile Gangrene of Foot,— Left 



foot and greater part of a leg, blood-vessels dissected — in spirit, 

 illustrating the above. 



The patient was a man, aged 70. The condition began in the great 

 toe, and it was amputated. The mischief returned, and lie had a slowly 

 increasing septic absorption from inliammation and suppuration of the 

 foot, with great pain and sleeplessness. The leg was amputated below 

 the knee, but the patient died three or four days afterwards. There was 

 little or no bleeding from the vessels at the oi)eration, probably because 

 they were blocked near the bifurcation of the popliteal artery. 



On dissecting out the arteries, the posterior tibial was 

 found to be obliterated at its upper end by what seems to have 

 been an old-standing clot, now apparently incorporated with 

 the walls of the vessel. Below that point the vessel has 



