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Iconology; Or, Emblematic Figures Explained. Or, Emblematic Figures Explained

Iconology; Or, Emblematic Figures Explained. Or, Emblematic Figures Explained

Paperback

General World History

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ISBN10: 1235154246
ISBN13: 9781235154249
Publisher: General Books
Pages: 130
Weight: 0.54
Height: 0.28 Width: 7.44 Depth: 9.69
Language: English
This historic book may have numerous typos, missing text or index. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. 1830. Not illustrated. Excerpt: ... MECHANICS. 1. Mechanics, or the science which teaches how to employ the mechanical powers, to set in motion ponderous bodies, and to overcome great resistance, is depicted as a woman in advanced age, with a circle on her head; in her right hand she holds a lever and pulley, and in her left a screw fixed upon a wedge. By her side is a capstan.* 2. The advanced age of this matron points out, that mankind had become experienced and skilful in many of the arts of life, before they had attained a complete knowledge of the mechanical powers. The emblem on her head shows, that those powers are generally produced by circular motion: the lever and pulley, the screw and wedge, are the principal instruments for exercising those powers; and the capstan is a skilful adaptation of several levers, for the purpose of raising great weights. 3. Although we have remarked, that mankind must have been considerably advanced in their knowledge of the arts of life, before they well understood the nature of the mechanical powers, yet evidence still exists, that those powers must have been employed to a most wonderful degree in the earliest ages of which we have any records. * A Capstan, or Capstern, is a mechanical engine used on shipboard. It is a strong massy column of timber, formed like a truncated cone, and having its upper extremity pierced with a number of holes to receive bars or levers. It is let perpendicularly down through the decks of a ship, having its upper or available part above the quarterdeck; and is fixed in such a manner, that the men, by turning it horizontally with their bars, may perform any work which requires a very great power. 4. The separation of enormous blocks of stone from their native rocks, removing them from the quarries, and raising them several hundre...

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