from Wiktionary, Creative Commons Attribution/Share-Alike License
- abbr. potassium (in older pharmaceutical nomenclature)
from The Century Dictionary and Cyclopedia
- n. Same as potash.
Sorry, no etymologies found.
Upon these ashes water is poured, which, filtrating through the hole in the bottom of the vessel, carries with it the potass contained in the ashes, and forms a very strong lye of the colour of strong beer: this lye they call sai-gee, ash-water.
Dr. Watson also recommends a _drink_, prepared of a drachm of _chlorate of potass_ to a pint of water, and has found great improvement from the use of a pint to a pint and a half of this solution daily.
Chlorate of potass -- Liquor calcii chloridi 62 92.
It is the precipitate of the salt of protoxide of iron with red prussiate of potass.
Into a pint gem-jar put water 10 parts, sulphuric acid 1 part, potass, bichromate 1 part.
Finally 100 grams of whiting, dry and sifted, are mixed with 5 grams of pulverised supertartrate of potass; this new powder is dissolved in a portion of the above described liquid, in sufficient quantity to form a paste of the proper consistency to be spread with a pencil on the article or part to be gilded.
Finally, 100 grams of sifted whiting are mixed with 10 grams of pulverised supertartrate of potass and one gram of mercury.
Take of linseed oil 2-1/2 galls., spirits of turpentine 2-1/2 galls., western petroleum 1 gall., liquor potass 8 oz., sap green
As an additional means of secrecy, the messages may be transmitted invisibly, by moistening the paper with diluted muriatic acid alone, the writing being rendered legible by a solution of prussiate of potass.
A short while after her death my father received a letter from the chemist at Paris, informing him that the sample of potass which he had sent to France was nothing but marine salt, and some particles of potass and saltpetre.
Perils and Captivity Comprising The sufferings of the Picard family after the shipwreck of the Medusa, in the year 1816; Narrative of the captivity of M. de Brisson, in the year 1785; Voyage of Madame Godin along the river of the Amazons, in the year 1770.
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