Directions for making and preserving microscopical preparations / by Harting of Utrecht.

Date:
[1852]
Catalogue details

Licence: Public Domain Mark

Credit: Directions for making and preserving microscopical preparations / by Harting of Utrecht. Source: Wellcome Collection.

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

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    the glass slides on which they are to be fastened. The openings may be cut out with a scissors, or struck out with a punch and hammer, the plate being laid upon a piece of cork. To fasten gutta-percha rings to the glass plates the cement recommended for caoutchouc is employed, and the process conducted in the same way, with this difference, that, after the last heating, which makes the gutta- percha soft again, pressure should be made upon it for a few seconds with a cold piece of mirror glass. The upper surface of the cell is thus rendered quite flat and smooth, so that the glass cover, when applied, is everywhere in contact with it. In this respect the gutta-percha cells are preferable to those of caoutchouc, the upper surface of which, especially about the edges, has always some degree of convexity.—Yol. ii., pp. 125-127.