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.
- Caleb Hillier Parry
- Date:
- 1816
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.
96/200 page 86
![diametriimque minuit, et lumen delet.* For the evidences of the truth of this ojiinion, he refers to vol. i. pag-e 72. Had this illustrious author been acquainted with the more recent discoveries as to the living- power of arteries, he would not have attributed to elasticity alone the facts which he relates. Spallanzani admits of two instances, in his experiments, of a considerable reduction of diameter, from depletion, in the descending aorta; but of what animals he does not inform us. It is probable, that he alludes to salaman- ders and green frogs, (raines vertes,) though he denies any such reduction in various other experiments.t He, however, falls into an error similar to that of HalI/ER ; inferring, that the strongest support of the truth of that physiologist's opinion of an actual contraction in these vessels would be the discovery of their power of dilatation; with regard to which, however, his experimen- tal results were different on different occasions.;]: I greatly regret, that various circumstances, attendant on the advance of the season, have * Physiologia, lib. vi. sect. i. §. xi, t Experiences sur la Circulation, &c. Diss. III. Exp,. XZQ, 138. X Ibid. p. 383.](https://iiif.wellcomecollection.org/image/b21299912_0096.jp2/full/800%2C/0/default.jpg)
