(520)
Operation twice, appeared the first time to find new strength by it; but expired soon after the second Operation: ** It were to be wished the Author had expressed the Interval of time, wherein these two operations followed one another; that seeming to be a material circumstance in the Case. The Ebullition, it seems, of the corrupt Blood having mastered and enervated all the Blood he had in his Body: which, when open'd, no Blood at all was found in his Heart: probably, as the Author conjectureth, upon this account, that there being not left in the Patient Blood enough of his own, nor strength sufficient to turn a strange Blood into a substance homogenius to that; the Heart was not capable to admit the Blood of the Emittent, as consisting of parts disproportionate to his own. But, as hath been already observed, his Entrails were altogether vitiated by a Gangrene, and he therefore out of the reach of being relieved by this Experiment.
Concerning the other Instance, viz. of the Doggs, the Letter affirms, that the Tryal was made by Monsieur Gayen with great exactness, after this manner. He drew three great dishes of Blood from the Dog that was to receive, and weighed the other Dog that was to furnish; and, the operation being perform'd, he weighed him again, and found him weigh less than he did by two pounds; of which having abated an ounce more or less, for the Urine, made by the Dog, and an ounce or two more for the Blood spilt in the Operation, there remaineth at least one pound and a half Blood, that was transfused. But, the Recipient, though well dress'd, and well fed, died five days after, the Emittent being yet alive. Whence it seems evident to this Writer, that the too large Intromission of new Blood was predominant over the Native, and as 'twere, overwhelm'd it. Whence he again inculcates the dangerousness of infusing too much Blood at once, in regard that such Blood being now separated from the principle of life it had in the Emittent, and as yet destitute of the stamp necessary to live the life of the Recipient, it could not be moved and assimilated by the live Blood, which remained in the Recipient; and the Fermentation, that was made, passed rather to an Eagerness or Sowerness, than to such an one as precedes Digestion. And this kind of eager acidity he intimates was seen by the Spectators, and felt by the Receiving Animal,