This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1875 edition. Excerpt: ... this by taking a porous vessel filled with distilled water, placed in another vessel containing a solution of sulphate of copper (bluestone). The salt penetrates into the inner vessel by diffusion. To which if a few drops of baryta water be added, the salt is precipitated, the equilibrium disturbed, and a new ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1875 edition. Excerpt: ... this by taking a porous vessel filled with distilled water, placed in another vessel containing a solution of sulphate of copper (bluestone). The salt penetrates into the inner vessel by diffusion. To which if a few drops of baryta water be added, the salt is precipitated, the equilibrium disturbed, and a new portion of the bluestone diffuses into the inner vessel. The precipitation again transpires on the application of the baryta water, until the whole of the sulphate of copper has passed and becomes precipitated. The carbo-hydrates are remarkable for the facility with which they may be changed into each other. Thus in germination, the starch of the seed is converted into dextrin and glucose, and in this form passes into the embryo to nourish theplantlet. Here, again, it changes into cellulose and starch. In the sugar beet (which is destitute of starch, ut contains 10 to 14 per cent, of sugar), in certain diseased conditions, the sugar is transformed into starch. The cereals sometimes show dextrin, upon analysis, instead of sugar or gum, which is more common. In the animal economy, similar transformations take place during the process of digestion. Cellulose, starch, dextrin, and the gums, are converted into sugar (glucose). Many of these changes which take place in nature may be produced by the action of chemical agents--as heat, acids, and ferments. Thus, cellulose and starch are convertible into dextrin and glucose, by boiling in dilute acids. Cotton or paper may be gradually changed into sugar, by strong chlorhydric acid (spirit of salt.) Cellulose and starch into dextrin, by nitric acid. A singular fact noticed by Prof. Johnson is, that while these changes are produced by physical and chemical agencies in one direction, they can only be...
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Add this copy of Text-book of Scientific Agriculture: With Practical to cart. $22.29, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2021 by Legare Street Press.
Add this copy of Text-book of Scientific Agriculture: With Practical to cart. $35.34, new condition, Sold by Ria Christie Books rated 5.0 out of 5 stars, ships from Uxbridge, MIDDLESEX, UNITED KINGDOM, published 2021 by Legare Street Press.
