An account of a method of preserving water, at sea, from putrefaction, and of restoring to the water its original pleasantness and purity, by a cheap and easy process : to which is added a mode of impregnating water, in large quantities, with fixed air, for medicinal uses, on board ships, and in hospitals ; and likewise a process for the preparation of artificial yeast / by Thomas Henry, F.R.S.

  • Henry, Thomas, 1734-1816.
Date:
MDCCLXXXI [1781]
Catalogue details

Licence: Public Domain Mark

Credit: An account of a method of preserving water, at sea, from putrefaction, and of restoring to the water its original pleasantness and purity, by a cheap and easy process : to which is added a mode of impregnating water, in large quantities, with fixed air, for medicinal uses, on board ships, and in hospitals ; and likewise a process for the preparation of artificial yeast / by Thomas Henry, F.R.S. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

    32/74 (page 16)
    4. Gently agitating the upper part of the cafk from time to time, during the procefs, will accelerate the completion of it, by occa- fioning a quicker abforption of the fixed air. And the fmall plug muft occasionally be taken from the orifice (c) to let out the part of the air which is not foluble in water. 5. The precipitated lime is to be cleared out of the cafk (A A) after each time of ufing it; and the calk Ihould be frequently warned out thoroughly, 6. Care muft be taken that the mouth of the air verTel be clear of calcareous earth before the ftopper be put in 5 and that the ends of the tubes in the ftopper be not clogged up with any thing that may prevent the paf- fage of the air through them. 7. Each fhip Ihould be provided with fe- veral of the air veflels, and each veffel Ihould have two or three tubulated ftoppers adapted to it. The veffels and their ftoppers to be marked with fimilar numbers.