The modern process for the preservation of all alimentary substances. By which they retain their native purity and essential qualities, in any climate and for several years, and by means of which may be served, at a few minutes notice, a complete and exquisite dinner / by Henderson William Brand.

  • Brand, Henderson William
Date:
1838
Catalogue details

Licence: Public Domain Mark

Credit: The modern process for the preservation of all alimentary substances. By which they retain their native purity and essential qualities, in any climate and for several years, and by means of which may be served, at a few minutes notice, a complete and exquisite dinner / by Henderson William Brand. Source: Wellcome Collection.

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    COMPRESSION BOILER. 9] OF THE DIGESTER, OR COMPRESSION BOILER,* AND THE WAY OF USING IT. This subject is presented in a practical point of view, as the results of long experience in the use of it. A digester, containing three hundred quarts, was first used to extract gelatine, or isinglass, from bones; and it was found that a pressure of fifteen pounds on the safety-valve was insuffi- cient for the purpose. It was augmented to twenty-two pounds, which sufficed for the en- tire extraction of the gelatine. Five additional pounds’ weight afterwards caused the gelatine to contract a degree of bitterness, which obliged the operator to recur to twenty-two pounds’ weight on the valve. ? Afterwards, two were made, containing four hundred quarts each. * The makers of these compression boilers are the proper persons to decide on the weight to be put on the safety-valve.
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