The anatomist's vade-mecum : containing the anatomy, physiology, morbid appearances, &c. of the human body : the art of making anatomical preparations, &c. / by Robert Hooper, M.D.

  • Hooper, Robert, 1773-1835.
Date:
1804
Catalogue details

Licence: Public Domain Mark

Credit: The anatomist's vade-mecum : containing the anatomy, physiology, morbid appearances, &c. of the human body : the art of making anatomical preparations, &c. / by Robert Hooper, M.D. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

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    It does not appear that Harvey was affifted in his dif- eovery fo much by the infpedion of the human body as that of animals, as frogs, mice, and the like; and the circurnftances which refult from the application of liga- tures to the limbs of living bodies, the opening of arte- ries and veins, and the labours of thofe who preceded him. New proofs of the pafiage of the blood from ar- teries into veins, and not from veins into arteries, fays this great man, may be taken from the valves of veins. ** If we irijedt air, fays he, into thefe canals, it will not pafs from the heart towards the extremities, whilft it is conveyed without any impediment through the veins of the extremities towards the heart. The valves, by their pofition andftrudure, form fo many obftaclestothe paf- fage of blood from the heart into the veins, and, on ths ** contrary, facilitate its Courfe in the veffels. To prove that thefe valves in a living man oppoie to the bloodpafi- ing towards the extremities, a refiftance equal to that which they riad made to the air injedcd into the dead fubjeft, Harvey recommends us to obferve what takes place in the veins of a man's arm of a fpnre habit: If a ** ligature be made above the condyles of the humerus, the ' *' velTels are irregularly fwelled when its prefiure on the arm is inconliderable ^ their diameter feems to be larger ** in fome points than in others: their narrownefs,he was of opinion, was occalioned by the valves: If, continues he, we carry the fingers from the ligature downwards towards the hands, a refiilance to the flowing of tiie ** blood is perceived, vdiich cannot be fuimoanted ; bur, ** on the contrary, the blood is puvhed forwards by a light b ;,