American Journal of Pharmacy, 1855, Vol. 3 PDF ePub eBook

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American Journal of Pharmacy, 1855, Vol. 3 free pdf Excerpt from American Journal of Pharmacy, 1855, Vol. 3 Chemical Examination. - One thousand grains of the root in coarse. powder was macerated with water for twelve hours- then placed in a percolator, and half a pint of liquid obtained- it was of a dark sherry color, slightly bitter and acid to the taste, (but not as acrid or irritating as the root when chewed.) The presence of albumen in this infusion was indicated by its coagulating upon being heated, and yielding precipitates upon the addition of a solution of tannic acid and corrosive sublimate. Tannin. - Solutions of tartar emetic and gelatin produced no change in the infusion. Sesqui salts of iron produced a marked difference in it, changed the solution to a dark olive green color, unchanged by heating it, and in the course of a short time gave a precipitate of an olive green color, indicating that the color produced by the addition of the sesqui salts of iron was not owing to the presence of gallic acid, but to the presence of a modified tannic acid, which strikes a green color with iron. Gum. - A portion of the infusion freed from tannic and coloring matter by neutral acetate of lead, gave, upon the addition of basic acetate of lead, a precipitate of gummy matter. Starch. - A portion of the dregs left in the percolator, was boiled with water, to (he filtered liquid tincture of iodine was added, which struck the deep blue color, characteristic of the presence of starch. Pectin. - The remaining portion of the dregs left was heated for some time with a dilute solution of carb. soda, the liquid filtered off, which upon the addition of chlorohydric acid produced a gelatinous precipitate, pectic acid. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully- any imperfections that remain are intentionally left to preserve the state of such historical works.

About Philadelphia College of Pharmac Science

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Details Book

Author : Philadelphia College of Pharmac Science
Publisher : Forgotten Books
Data Published : 27 September 2015
ISBN : 1330750268
EAN : 9781330750261
Format Book : PDF, Epub, DOCx, TXT
Number of Pages : 608 pages
Age + : 15 years
Language : English
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  • American Journal of Pharmacy, 1855, Vol. 3 free pdfAmerican Journal of Pharmacy, 1855, Vol. 3

    How To Download Ebooks For Free. Excerpt from American Journal of Pharmacy, 1855, Vol. 3 Chemical Examination. - One thousand grains of the root in coarse. powder was macerated with water for twelve h