In December I laid a common field gate on the ground, with ſome ſtraw upon it, on which a white mare was cast on her right ſide, and in that poſture bound faſt to the Gate; ſhe was fourteen hands and three inches high [150 cm], lean, tho' not to a great degree, and about ten or twelve years old. This and the above-mentioned horſe and mare were to have been killed, as being unfit for ſervice ….
Then laying bare the left carotid artery, I fixed to it towards the heart the braſs pipe, and to that the wind-pipe of a gooſe; to the other end of which a glaſs tube was fixed, which was twelve feet nine inches long [388 cm]. The deſign of uſing the wind-pipe was by its pliancy to prevent the inconveniencies that might happen when the mare ſtruggled; if the tube had been immediately fixed to the artery, without the intervention of this pliant pipe.
There had been loſt before the tube was fixed to the artery, about ſeventy cubic inches of blood [1.15 L]. The blood roſe in the tube in the same manner as in the caſe of the two former horses, till it reached to nine feet ſix inches height [290 cm]. I then took away the tube from the artery, and let out by meaſure ſixty cubick inches of blood [0.98 L], and then immediately replaced the tube to ſee how high the blood would riſe in it after each evacuation; this was repeated ſeveral times, till the mare expired ….
|tire||length (in.)||width (in.)||pressure (p.s.i.)||weight (lbs)|
|P (atm)||mplanet (kg)||rplanet (km)||g (m/s2)||matmosphere (kg)|
|venus||90.000||4.8685 × 1024||6051.8|
|earth||01.000||5.9736 × 1024||6371.0||9.8||5.27 × 1018 kg|
|mars||00.007||6.4185 × 1023||3390.0|