Summary

Philosophical Transactions, Volume 1…

“ First, that you fasten the Dogs at such a convenient distance, that the Vein nor Artery be not stretched; for then, being contracted, they will not admit or convey so much bloud.
Secondly, that you constantly observe the Pulse beyond the Quill in the Dogs Jugular Vein (which it acquires from the impulse of the Arterious bloud:) For if that fails, then 'tis a sign the Quill is stopt by some congealed bloud, so that you must draw out the Arterial Quill from the other, and with a Probe open the passage again in both of them, that the bloud may have its free course again.
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Source: Wikisource

Philosophical Transactions, Volume 1…

“ But when I return, I doubt not but to give you a fuller account, not only by bleeding several Dogs into one, but several other creatures into one another, as you did propose to me, before you left Oxford; which will be very easie to perform; and will afford many pleasant and perhaps not unuseful Experiments.
But because there are many Circumstances necessary to be observ'd in the performing of this experiment, and that you may better direct any one to doe it, without any danger of killing the other Dog, that is to receive the others bloud, I will mention two or three.
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Source: Wikisource

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