An experimental inquiry into the nature, cause, and varieties of the arterial pulse : and into certain other properties of the larger arteries, in animals with warm blood. / by Caleb Hillier Parry.

  • Parry, Caleb Hillier, 1755-1822.
Date:
1816
Catalogue details

Licence: Public Domain Mark

Credit: An experimental inquiry into the nature, cause, and varieties of the arterial pulse : and into certain other properties of the larger arteries, in animals with warm blood. / by Caleb Hillier Parry. Source: Wellcome Collection.

Provider: This material has been provided by King’s College London. The original may be consulted at King’s College London.

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    precisely the same as with regard to the two former ligatures; extending themselves beyond tlie third ligature. All the ligatures were plainly perceived to move forwards at eacli systole of the heart, and to return back during the diastole. The part included between the first and second ligature was punctured with a pair of scissars ; but serum alone flowed out. A full hour had elapsed from the time of the second ligature. The part between the second and third liga- ture was now punctured; and entire blood flowed from the wound. This last ligature had not been made more than a quarter of an hour. The impulse was felt, just as before, beyond the second and third ligatures; and the first, second, and third, were aff*ected by the systole and diastole of the heart, as before the punctures had been made. The artery being now measured in the same spot as before, which was a little before the puncture between the second and third ligatures, was found to be in circumference only oi an inch. The horse was then (4^ p. m.^ killed, by yjpening the left carotid artery.