Experiments on animals / by Stephen Paget ; with an introduction by Lord Lister.

  • Stephen Paget
Date:
1900
Catalogue details

Licence: In copyright

Credit: Experiments on animals / by Stephen Paget ; with an introduction by Lord Lister. Source: Wellcome Collection.

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    tion ; they thought of a sort of Stygian tide, oozing this way or that way in the vessels—Csesalpinus was of opinion that it went one way in the daytime and another at night—nor did they see that the pulmonary circulation and the general circulation are one system, the same blood covering the whole course. II Harvey (1578-1657) The De Motu Cordis et Sanguinis in Anunalibus was published at Frankfort, in 1621. And it begins with these words—Cum multis vivorum dissectionibus, uti ad manum dabantur :— u When by many dissections of living animals, as they came to hand, I first gave myself to observing how I might discover, with my own eyes, and not from books and the writings of other men, the use and purpose of the move¬ ment of the heart in animals, forthwith I found the matter hard indeed, and full of difficulty : so that I began to think, with Frascatorius, that the movement of the heart was known to God alone. For I could not distinguish aright either the nature of its systole and diastole, nor when nor where dilatation and contraction took place; and this because of the swiftness of the movement, which in many animals in the twinkling of an eye, like a flash of light¬ ning, revealed itself to sight and then was gone ; so that I came to believe that I saw systole and diastole now this way now the other, and movements now apart and now together. Wherefore my mind wavered ; I had nothing assured to me, neither decided by me nor taken from other
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