THE H^EMORRHAGIC DIATHESIS 79 



A donor, not a relative, was tested by Wassermann's 

 test for syphilis, and declared free. Under novocain 

 anaesthesia his radial artery was connected by an 

 Elsberg cannula with the child's femoral vein. 

 There were some initial difficulties in getting a good 

 flow, and hot cloths had to be applied ; finally the 

 basilic vein was substituted for the femoral, on account 

 of differences in the level of these patients. Trans- 

 fusion was continued for twenty-eight minutes. 

 During this time colour gradually mounted up in 

 the cheeks of the little sufferer, the breathing became 

 audible once more, the almost watery blood acquired 

 its normal hue, and the haemoglobin rose to 70 per 

 cent. Most significant of all, the bleeding was 

 completely and permanently arrested, and there was 

 no haemorrhage from the incisions. Both made an 

 excellent recovery. The donor required to rest in 

 bed for a few days. 



The above-described case by no means stands 

 alone ; excellent results have been obtained in 

 septicaemia and in coal-gas poisoning as well as in 

 haemophilia. It will not do to use animal's blood, 

 because bloods of different species are mutually 

 destructive. 



The connection between the two patients may be 

 made by dissecting out a short length of artery and 

 vein respectively under local anaesthesia, and uniting 

 them either by a short oiled glass tube or by Carrel's 

 immediate suture. Of course great care must be 

 taken not to inject clots or air, and the technical 

 difficulties may be considerable. 



When a healthy adult supplies blood to an infant, 



