Directions for making anatomical preparations : formed on the basis of Pole, Marjolin and Breschet, and including the new method of Mr. Swan / by Usher Parsons.

  • Parsons, Usher, 1788-1868.
Date:
1831
Catalogue details

Licence: Public Domain Mark

Credit: Directions for making anatomical preparations : formed on the basis of Pole, Marjolin and Breschet, and including the new method of Mr. Swan / by Usher Parsons. Source: Wellcome Collection.

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    » 18 INJECTED DRY PREPARATIONS. | bi hand in using warm injection, which may be laid . upon a ruptured or divided small blood-vessel, from which the injection is escaping, to congeal it. Mr. C. Bell recommends pushing the piston slow- ly and gradually in throwing in fine and minute injec- tion, thus insinuating the fluid into the more deli- cate vessels, which are easily ruptured. — 3 SECTION XII. Valves of the Arteries and Veins. The arteries have no valves ‘except near the heart, and are therefore easily injected in any direction, and as they are always found empty after death, they re- quire no previous washing out. In both these re-— spects they differ from the veins, which have numer- ous valves, that prevent the flow of injection from the heart, and are always found distended with coag- ulated blood, that must be washed out before they can be injected ; and as this must be done in the di- rection of the circulation, small pipes are to be in- troduced into remote parts, as the hand, foot, or head ; and warm water is thrown into them towards the heart, to wash out the coagula, which may be made to escape through a small incision made with a lancet in the tip of the right auricle. Through the same_ pipes, an injection of a different colour from that of the arteries is to be thrown in, until it appears at the opening in the heart. Before filling the last ve- nous pipe, a pin may be passed through the lips of