Science Record; A Compendium of Scientific Progress and Discovery During the Past Year - Softcover

Beach, Alfred Ely

 
9781458996466: Science Record; A Compendium of Scientific Progress and Discovery During the Past Year

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Inhaltsangabe

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. 1875. Not illustrated. Excerpt: ... two "mothers " are provided, heated by the cistern, and the chickens are placed under them as soon as dry. The mothers must be supplied with cotton wool or flannel for the chickens to nestle in, and with the warmth against their backs they are quite contented. This incubator holds thirty eggs at a sitting, or three chickens every two days; but it can be made to hold double or treble, if specially ordered. NOVEL MODE OF SLAUGHTERING CATTLE. The present mode of killing cattle, by striking the animal with a hatchet or axe, is a cruel operation, as in most cases repeated blows are required to produce the death of the animal. Different methods have been recommended and tested for the purpose of executing the operation with the greatest possible dispatch, so that the animal be not unnecessarily exposed to protracted suffering. The device represented in the illustration is a French invention, and promises to meet all requirements, being so simple in construction that it may be readily employed anywhere. The head of the animal is covered by a kind of mask of suitable material, which closes the eyes entirely, and is at the centre provided with a circular plate of sheet iron, riveted thereto, which guides in a central perforation a strong steel bolt or pin, in a direction vertical to the plate. The inner end of the sliding-bolt faces the head of the animal and is made hollow, while the outer projecting part is provided with a large knob. The masked or blindfolded animal has no idea of his fate, a single blow of the hammer or club on the knob being sufficient to drive the bolt into the brain, and produce the instant dropping of the animal as if struck by lightning. The theory is, that the small quantity of air in the hollow end of the bolt is forced with the same into the ...

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9780461301212: Science Record: a Compendium of Scientific Progress and Discovery During the Past Year

Vorgestellte Ausgabe

ISBN 10:  0461301210 ISBN 13:  9780461301212
Verlag: Hardpress Publishing, 2020
Softcover