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way is in short this. After the Artery is prepar'd in the Lamb, Kid, &c. let a Ligature be made upon the Arm, &c. of a man (hard enough to render the Vein turgid;) in the place you intend to insert the lesser end of the Silver pipe, which is so fitted, that the Silver Stopper, thrust into the Tube, reaches somewhat, by its blunt end, beyond one of the ends of that Tube. This done, divide the skin of the part in the same manner, that is used in cutting an Issue, just over the vein, to be open'd. Then with a fine Lance open the vein; or, you please, in case the vein lye fair and high (especially if the skin be fine) you may open both together, according to the usual way of letting Blood. Which done, let an Assistant clap his finger, or a little Boulster, prepared before hand, or the like, upon the Vein a little below the Orfice, to hinder the Blood from ascending. Keeping that position, insert the blunt-ended Tupe upwards into the Vein; when 'tis in, hold it and the skin close together between your finger and thubm. Then pull out if the Tube the Stopper, and insert the Pipe, by which the Arterial Blood is to be infused from the Emittent Animal; managing the remainder according to the known Method of this Experiment.
So far this Letter; which maketh the practicableness of this Method look so fair and easie, that nothing seems wanting to encourage the Trial, but the Direction and Assistance of discreet and skillful men, taking care, not to experiment it upon Subjects, that have their internal parts vitiated; for as much as it seems not reasonable to expect, that this Transfusion should cure Cacochymies, or restore a depraved constitution of the viscera.
We would have said no more of this Argument at this time, were we not obliged to remove a mistake found in one of the late French journals, affirming with confidence, that 'tis certain, the
French
