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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    Now apply the heat gradually, to avoid fracturing the retort, and closely observe the process. When the am- monia is melted, it very soon commences to boil; after which, regulate the heat to keep it quietly boiling until it is nearly all decomposed. Should it get to boiling too rapidly, take a dry cloth and raise the retort out of the sand-bath until the violent ebullition diminishes, when it can be replaced. Shut off the heat before it is quite all decomposed, as there is danger of breaking the retort. When the gas has ceased to come over, take a cloth and disconnect the retort from the tubing, and close the spigot of the gasometer. When the gas has re- mained in the gasometer from five to six hours, it is in a condition fit for use. The water, and solutions contained in