Manual of the discovery, manufacture, and administration of nitrous oxide, or laughing gas : in its relations to dental or minor surgical operations, and particularly for the painless extraction of teeth / By F. R. Thomas, D. D. S.

  • Thomas, F. R.
Date:
1870
Catalogue details

Licence: Public Domain Mark

Credit: Manual of the discovery, manufacture, and administration of nitrous oxide, or laughing gas : in its relations to dental or minor surgical operations, and particularly for the painless extraction of teeth / By F. R. Thomas, D. D. S. Source: Wellcome Collection.

Provider: This material has been provided by the Harvey Cushing/John Hay Whitney Medical Library at Yale University, through the Medical Heritage Library. The original may be consulted at the Harvey Cushing/John Hay Whitney Medical Library at Yale University.

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    as nitrate of ammonia; symbol, NH3HO NOs. Nitrate of ammonia is prepared by the following formula, but it can be obtained at the dental depots, or at the manufac- turer's, in a prepared condition. To car- bonate of ammonia, pure nitric acid is added, until neutralization is perfected, and by slow evaporation, at a moderate temperature, it becomes crystallized. In manufacturing nitrous oxide, the fused or granulated form is used. The fused salt is prepared by melting down the crystals and allowing them to so- lidify by cooling into masses. The gran- ulation is perfected by boiling and stir- ring the mass until it cools. The granu- lated I think preferable, from the facility with which it can be introduced into the retort. The fused frequently comes in