THE HyEMORRHAGIC DIATHESIS 143 



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, 

 the donor suffers no ill-effects, except that rest for 

 a few days is desirable. In many cases, however, 

 especially if older children or adults are to be trans- 

 fused, it would be well to provide two donors, either 

 simultaneously or successively. But probably it is 

 not necessary to transfuse large quantities. We have 

 seen that quite a trifling addition of normal blood 

 will make it possible for haemophiliac blood to clot 

 promptly, and there is no need in most cases to do 

 more than stanch the bleeding. Rest, fresh air, 

 plenty of fluids, and iron, will speed the convalescence. 



