Volume 1

A textbook of pathology : systematic & practical.

  • Hamilton, David James.
Date:
1889-94
Catalogue details

Licence: Public Domain Mark

Credit: A textbook of pathology : systematic & practical. Source: Wellcome Collection.

Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.

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    through the tube (P), and is collected in a vessel. The spray-producing tubes (T) can be readily pulled out of the slit under Z for examina- tion. The tissue is soon frozen, and it remains frozen for about five minutes in a cool room, without any further production of spray. When used as an ice freezing microtome the glass plate L is un- screwed. The supports M and M', the tubes T, the bottle and bellows, are removed; Z is unscrewed, and the plug K screwed in its place, and sunk deep in the well. The glass plate L is then screwed on the brass plate B, and the instrument is ready for use. The further par- ticulars are of course the same as in the description of the simple ice- freezing instrument. P’lG. 13.—Rutherford’s Ice and Ether Freezing Microtome. Large Ice Freezing Microtome for Cutting Sections of an Entire Organ.-— Mr. Gardner of Edinliurgh has constructed, from the author’s designs, a large microtome for cutting sections of entire organs such as brain, liver, or kidney. It is built essentially on the same principle as Rutherford’s ice instrument, but the blade, instead of being held in the hand is fixed in a ponderous framework which runs in a railway placed on each side of the stage. The framework for the blade requires to be very heavy so as to gain the necessary momentum, and the blade should be made like a planing-iron, but of particularly thick steel, so as to prevent its bending when it catches the edge of the frozen tissue. The freezing mixture is composed of snow and salt;