Agricultural zoology / with an introduction by E.A. Ormerod, trans. by J.R.A. Davis.

  • Bos, Jan Ritzema.
Date:
1894
Catalogue details

Licence: Public Domain Mark

Credit: Agricultural zoology / with an introduction by E.A. Ormerod, trans. by J.R.A. Davis. Source: Wellcome Collection.

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    every person possesses at least two names, a Christian name and a surname. The generic name comes first, and is, of course, common to all animals of the same genus. The second name is the specific one, and belongs exclusively to animals of the same species. The hare and rabbit, for example, are both included in the genus Lepus. The Latin name of the first is Lepns timidus; that of the second, Lepus cuniculus. Horse = Equus caballus ; ass — Equus asinus. II. Review of the Structure and Vital Phenomena of Animals. I select as a point of departure the human body, and the bodies of domestic animals, because my readers are best acquainted with these. The limbs consist, beginning on the outside, of skin, flesh, and bone. The same parts can also be distin- guished in the head, neck, and trunk; but in these divisions of the body they enclose a cavity, the body-cavity, which, again, contains various parts (“ organs ”), which are not everywhere attached to the body-wall. Fig. 1 represents a longitudinal section through the body. The skin is represented by a line, flesh and internal lining are shaded, while the bones are black. These parts form together the body-wall. In front the body-wall encloses a cavity, the body- cavity (Kh.), which in Mammals is divided into two sections (thoracic cavity, Bz.h, and abdominal cavity, B.h.) by the midriff (diaphragm). In the thoracic cavity are found the lungs and heart (H), also most of the gullet or upper part of the gut; the abdominal cavity contains the remainder of the often much-coiled gut, which in one place widens into the stomach (ill), also the kidneys, spleen, and parts connected with the gut (e.g. the liver). The cavities are bounded behind by the backbone (vertebral column), which is made up of many flattened vertebrae. The uppermost vertebra
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