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.

  • Usher Parsons
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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    - CHAPTER III. - QUICKSILVER INJECTIONS AND PREPARATIONS. SECTION XLVIII. _ General Observations. The fluidity, specific gravity, and metalic lustre of quicksilver, render it valuable for displaying minute — vessels. The principal objection to its general use for filling such vessels is, the continuance of its fluidity, which renders dissection impracticable. ‘Its great specific gravity when supported in a column is such, as to exert strong pressure upon a blood-vessel, or lymphatic that receives it from the column and renders a syringe unnecessary. It is to be borne in mind that the force of the injec- tion depends upon the perpendicular height of the column, and not its diameter, and the former may be such as to burst the vessel. The part should always be injected in a proper tray, that the mercury may be easily collected. Ifa lymphatic preparation, provide very small lancets, straight and delicately pointed,