Veterinary Medicines
The book Veterinary Medicines was written by author Here you can read free online of Veterinary Medicines book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Veterinary Medicines a good or bad book?
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In our eReader you can find the full English version of the book. Read Veterinary Medicines Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Veterinary Medicines
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Galls vary from the size of a bean to that of a hazel-nut, are round, hard, and studded with tubercles ; of a bluish- grey colour externally, and yellow within. An inferior variety, from which the larva has escaped, are smoother, of lighter colour, lower density, and less astringency. Galls are easily reduced to a yellow-grey powder, devoid of odour, but having an intensely astringent taste. The active principles are dissolved by forty parts of boiling water and still less of diluted alcohol. F...erric salts, added to a watery solution, slowly precipitate the dark-blue or black iron tannate, the basis of writing ink. An aqueous solution of gelatin throws down a grey flocculent precipitate of tanno- gelatin. These reactions, and other important properties, depend on the presence of tannin or tannic acid, which, according to the quality of the galls, ranges from 15 to 70 per cent. , and is associated with about 3 per cent, of gallic acid.
TANNIC ACID, or tannin (C 14 H 10 9 . 2H 2 0), is the compound to which oak bark, galls, logwood, and many vegetable astringents owe their properties.
What to read after Veterinary Medicines?
You can find similar books in the "Read Also" column, or choose other free books by Finlay Dun to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Galls vary from the size of a bean to that of a hazel-nut, are round, hard, and studded with tubercles ; of a bluish- grey colour externally, and yellow within. An inferior variety, from which the larva has escaped, are smoother, of lighter colour, lower density, and less astringency. Galls are easily reduced to a yellow-grey powder, devoid of odour, but having an intensely astringent taste. The active principles are dissolved by forty parts of boiling water and still less of diluted alcohol. F...erric salts, added to a watery solution, slowly precipitate the dark-blue or black iron tannate, the basis of writing ink. An aqueous solution of gelatin throws down a grey flocculent precipitate of tanno- gelatin. These reactions, and other important properties, depend on the presence of tannin or tannic acid, which, according to the quality of the galls, ranges from 15 to 70 per cent. , and is associated with about 3 per cent, of gallic acid.
TANNIC ACID, or tannin (C 14 H 10 9 . 2H 2 0), is the compound to which oak bark, galls, logwood, and many vegetable astringents owe their properties.
What to read after Veterinary Medicines?
You can find similar books in the "Read Also" column, or choose other free books by Finlay Dun to read onlineMoreLess
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