204 . PHILOSOPHICAL TRANSACTIONS. [aNNO I667. 



blood hot (as was reported of the subject in the French experiment) which may 

 very well be imputed to the length of the pipes through which the blood 

 passed, losing thereby so much of its heat, as to come in a temper very agree- 

 able to venal blood. And as to the quantity of blood received into the man's 

 vein we judge there was about nine or ten ounces : For, allowing this pipe -i- less 

 than that through which 1 2 ounces passed in one minute before, we may very 

 well suppose it might in two minutes convey as much blood into the vein as the 

 other did into the porringer, in one minute, granting withal that the blood did 

 not run so vigorously the second minute as the first, nor the third as the se- 

 cond, &c. But we conceive that the blood ran during the whole of those two 

 minutes : First, because we felt a pulse during that time : Secondly, because 

 when, upon the man's saying he thought he had enough, we drew the pipe out 

 of his vein, the sheep's blood ran through it with a full stream ; which it had 

 not done, if there had been any stop before in the space of those two minutes ; 

 the blood being so very apt to coagulate in the pipes upon the least stop, 

 especially the pipes being so long as three quills. 



The man after this operation, as well as in it, found himself very well, and 

 has given in his own narrative under his own hand, enlarging more upon the 

 benefit which he thinks he has received by it, than we as yet think fit to own. 

 He urged us to have the experiment repeated upon him within three or four 

 days after this ; but it was thought advisable to put it off somewhat longer. 

 And the next time we hope to be more exact, especially in weighing the emit- 

 tent animal before and after the operation, to have a more just account of the 

 quantity of blood it shall have lost. 



A Relation of some Trials of Transfusion lately made in France, 

 By Mr. Oldenburg. N" 30, p. 559- 



1 . Mr. Denys, Professor of Mathematics and Natural Philosophy at Paris, 

 states in a letter to the publisher, that they had lately transfused the blood of 

 four wethers into a horse l6 years old, and that this horse had thence received 

 much strength, and more than ordinary appetite. 



2. The same person was pleased to send to the same hand a printed letter 

 written to the Abbot Bourdelot, by M. Gadroys, being an answer to a paper of 

 one M. Lamy. In this answer the author vindicates the experiments of trans- 

 fusion from the objections that have been urged against them. 



