VOL, II.J PHILOSOPHICAL TRANSACTIONS. 15g 



of a less size than the former ; by which time the spectators as well as myself 

 found her exceeding f^nt, and some thought her past recovery, without a sup- 

 ply of blood. Then I conveyed blood from the jugular vein of a calf into that 

 of the sheep, for the space of seven minutes, when we did believe by the con- 

 tinuance of a good stream from the calf, that the sheep had already received 

 more blood than she had lost. Whereupon we set her free, and she had no sooner 

 got her liberty, but seeing a dog near her, a spaniel that had formerly suffered 

 the transmission of sheep's blood into him, she butted with great violence at 

 him three or four times, not appearing at all concerned at what she had endured 

 in the experiment. We keep this sheep alive, she being sent to grass again, 

 and seeming hitherto very strong and lusty. 



The calf was much larger than the sheep. We bled the calf to death, and 

 received from him six porringers full of blood after the sheep had been supplied, 

 each porringer containing IJ-i- ounces of water. The sheep lost four of the 

 same measures full of blood ; which being supplied by that of the calf, we 

 reckon that the calf lost ten such measures in all. 



y4?i Account of another Experiment of Transfusion, in Bleeding a 

 Mangy into a Sound Dog. By Mr. Thomas Coxe. N° 25, p. 451. 



The object of this experiment was to ascertain whether the sound dog would 

 become infected by having the blood of the mangy dog transfused into his 

 veins. The result was, that no alteration whatever was produced in the sound 

 dog by this operation ; but in about ten days or a fortnight the mangy dog was 

 perfectly cured, in consequence, it is supposed, of the quantity of blood which 

 he lost on this occasion. 



Extract of a Letter from M. Denis, Professor of Philosophy and 

 Mathematics, touching the Transfusion of Blood, dated April 2, 

 1667. N' 25, p. 453. 



Since the experiments, of which I wrote to you the Qth of March, we have 

 transfused the blood of three calves into three dogs, to assure ourselves what 

 the mixture of two such different sorts of blood might produce. I shall here- 

 after acquaint you at large with the particulars ; at present I shall only inform 

 you, that the animals into which the blood had been transmitted do all of them 

 eat as well as before, and that one of these three dogs, from whom the day be- 

 fore so much blood had been drawn that he could hardly stir any more, hav- 

 ing been supplied the next morning with the blood of a calf, recovered in- 

 stantly his strength, and showed a surprising vigour. 



