Cm} 
till the other Dog begin' to cry, and faint, and fall into Con* 
vulfions, and at laft dye by his fide. 
Then take out both the Quills out of the Dogs Jugular 
Vein, and tye the running knot fall, and cut the Veinafun* 
der, (which you may doe without any harm to the Dog, one 
Jugular Vein being fufficient to convey all the bloud from 
the Head and upper parts, by reafon of a large Anaftomp s 
whereby both the Jugular Veins meet about the Larynx 
This done, low up the skin and dif-mils him, and the Dog will 
leap from the Table and fhake himfelf, and run away, as if no- 
thing ailed him. 
And this I have tryed feveral times, before feveral in the 
ZJniverpies, but never yet upon more than one Dog at a time, 
for want of leifure, and convenient fupplyes of feveral Dogs 
at once. But when I return, I doubt not but to give you a 
fuller account, not only by bleeding feveral Dogs into one, 
but feveral other creatures into one another, as you did pro- 
pofe to me, before you left Oxford , which will be very eafie 
to perform 5 and will afford many pleafant and perhaps not 
unufeful Experiments. 
But becaufe there are many Circumftances necefiary to be 
obferv’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. 
Firjl, that you faften the Dogs at fuch a convenient di- 
ftancc, that the Vein nor Artery be notftretched 5 for then, 
being contrafted, they will not admit or convey fo much 
bloud. 
Secondly ^ that you conffantly obferve the Pulfe beyond the 
Quill in the Dogs Jugular Vein (which it acquires from the 
impulfe of the Arterio&s bloud : ) For if that fails, then ’tis a 
fign the Quill is ftoptby feme congealed bloud, fethat you 
muft draw out the Arterial Quill from the other, and with a 
Probe open the pafiage again in both of them, that the bloud 
may have its free courfe again. For, this muft be expe&ed 9 
when the Dog, that bleeds into the other, hath loft much 
bloud, his heart will beat very faintly, and then the impu]f e 
Aaa2 of 
