First steps in photo-micrography / [F. Martin Duncan].

  • F. Martin Duncan
Date:
1902
Catalogue details

Licence: In copyright

Credit: First steps in photo-micrography / [F. Martin Duncan]. Source: Wellcome Collection.

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    razor with the right hand, and make a drawing cut, using the whole length of the blade, from heel to tip. The razor must he kept well moistened with dilute methylated spirit, and should also he carefully stropped, from time to time, during the section cutting operations. With a little practice, very satisfactory thin sections can he cnt from specimens embedded in pith. Tor general purposes, paraffin wax will he found very useful as an embedding mass. Alone, it is too hard and brittle, and the high temperature required to melt it would in most cases quite spoil the specimen; therefore, it lias to lie mixed either with vaseline or lard. A useful embedding mass can be made by taking 8 oz. of solid paraffin wax and 2 oz. of lard, and melting them together slowly, with the aid of gentle heat. To embed, take the specimen out of the spirit, and gently dry its surface with a piece of blotting-paper or cloth. Place it in a little paper mould or pill-box, in the desired position for cutting the sections,
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