Dr. Croone told me, that at the meeting of Gresham College tonight, which it seems they now have every Wednesday, there was a pretty experiment of the blood of one dog let out till he died, into the body of another on one side, while all his own run out on the other side. The first died upon the place, and the other very well and likely to do well. This did give occasion to many pretty wishes, as of the blood of a Quaker to be let into an Archbishop, and such like; but, as Dr. Croone says, may, if it takes, be of mighty use to man's health, for the amending of bad blood by borrowing from a better body.