Popular Technology Or Professions And Trades volume 1
Popular Technology Or Professions And Trades volume 1
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In our eReader you can find the full English version of the book. Read Popular Technology Or Professions And Trades volume 1 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 Popular Technology Or Professions And Trades volume 1
What reading level is Popular Technology Or Professions And Trades volume 1 book?
To quickly assess the difficulty of the text, read a short excerpt:
1. THE art of tanning consists in converting hides and skins into leather, by impregnating them with as- tringent matter.
2. It is impossible to determine the period at which the art of tanning was discovered. It was doubtless known to the ancients, and probably to the antedilu- vians, in some. Degree of perfection ; since skins were applied as means of clothing the human body, before the arts of spinning and weaving were practised. It is likely, however, that they were applied to this pur- pos...e, for a considerable time, in their natural state ; and that accident, at length, suggested the means of rendering them more applicable, by saturating them with certain mineral or vegetable substances.
3. Although the art of converting skins into leather 112 THE TANNER.
was practised in remote ages, yet it was not until near the end of the eighteenth century, that the true principle of the process was understood. Before this tiine, it was supposed, that the astringent principle of the agents employed, was a resinous substance, which adhered mechanically to the fibres, and thus render, ed them firm and insoluble.
What to read after Popular Technology Or Professions And Trades volume 1?
You can find similar books in the "Read Also" column, or choose other free books by Edward Hazen to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
1. THE art of tanning consists in converting hides and skins into leather, by impregnating them with as- tringent matter.
2. It is impossible to determine the period at which the art of tanning was discovered. It was doubtless known to the ancients, and probably to the antedilu- vians, in some. Degree of perfection ; since skins were applied as means of clothing the human body, before the arts of spinning and weaving were practised. It is likely, however, that they were applied to this pur- pos...e, for a considerable time, in their natural state ; and that accident, at length, suggested the means of rendering them more applicable, by saturating them with certain mineral or vegetable substances.
3. Although the art of converting skins into leather 112 THE TANNER.
was practised in remote ages, yet it was not until near the end of the eighteenth century, that the true principle of the process was understood. Before this tiine, it was supposed, that the astringent principle of the agents employed, was a resinous substance, which adhered mechanically to the fibres, and thus render, ed them firm and insoluble.
What to read after Popular Technology Or Professions And Trades volume 1?
You can find similar books in the "Read Also" column, or choose other free books by Edward Hazen to read onlineMoreLess
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