Elements of the practice of physic / [George Fordyce].

  • George Fordyce
Date:
1768-1770 [v. 1, 1770]
Catalogue details

Licence: Public Domain Mark

Credit: Elements of the practice of physic / [George Fordyce]. Source: Wellcome Collection.

    11/204 (page 7)
    % H Properties of the Red Part. PON viewing this part of the blood with a deep magnifier in the folar microfcope, as it circulates in the blood-veflels of a living animal, it appears to be divided into a number of fmall particles, which are apparently annular, and exceedingly flexible. While the animal is refpiring, and the blood cir¬ culating, it is of a fcarlet colour in the arteries, and of a Modena red in the veins ; but if the refpiration be flopped, that blood which circulates afterwards through the lungs continues of a Modena red. If it be taken out of the veins, kept moift, and expofed to refpirable air, it becomes of a fcarlet colour \ if it be taken out of the arteries, and covered from the ajr, or if it ftagnate in them, its colour is changed to a Modena red. A light fhade of Modena red is not fcarlet, neither is a deep fcarlet a Modena red. Va¬ rious other fubftances alter the colour of this part. It feems to have a fweetifli tafte, to be inodorous, and void of ftimulus. Its fpecific gravity is but a very little more than the ferum or coagulable lymph. It is more inflammable than the other parts ; and, on performing its chemical analyfis, it yields a large proportion of empyreumatic oil. It is readily foluble in water, but not in the ferum. It is not foluble in a faturated folution of neutral falts.