THE VASCULAR SYSTEM 



113 



peripheral end of the external jugular vein united to the central 

 end of the carotid artery. Now the circulation through the vein 

 is apparently as active as it was on the day of the operation. In 

 another case, where the jugular has numerous collaterals, there 

 appears to be some dilatation of the main portion of the vessel, 

 and feeble pulsations can be detected in the jugular of the other 

 side. In three cases of reversal of the circulation through the 

 thyroid gland the results seem to be permanent, even after 



Fi<;. 1. Extemal jugular united to 

 carotid artery. Reversal of circulation 

 through the thyroid gland. A method 

 of modifying the function of the gland 

 by producing hypenemia. 



FIG. 2. Preparation of host for receipt 

 of kidney graft. The viscera are covered 

 with pads wet with warm saline during 

 the operation. Clijw on divided aorta of 



vena cava. 



several months. On no dog kept in the laboratory has oblitera- 

 tion of the vessels occurred, even after several months. 



" At the present time we can only state that seven months after 

 the operation the veins have performed the main arterial functions 

 and that occlusion has not occurred." 



Carrel and Guthrie amputated and replanted a dog's thigh. 

 "The circulation was easily and entirely re-established. The 

 pulsations of the femoral, popliteal, and posterior tibial arteries 

 were as strong as the pulsations of the corresponding arteries of 

 the other side. The arterial circulation was seemingly normal. 

 The capillary circulation was exaggerated, the temperature of the 



