A practical guide to meat inspection / by Thomas Walley.

  • Walley, Thomas, 1842-1894.
Date:
1891
Catalogue details

Licence: Public Domain Mark

Credit: A practical guide to meat inspection / by Thomas Walley. Source: Wellcome Collection.

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    blood. The blood, in septic infection, swarms with micro- organisms, such as those depicted in our illustrations, and it is extremely virulent, so that a few drops injected into the cellular tissue of a small animal, produces death in a comparatively short space of time. Of the internal organs, all those of a vascular character, especially the liver, spleen, and kidneys, are usually engorged with blood. The heart is flaccid and contains imperfect coagula of blood of the same character as those found in the systemic veins. The mucous membrane of the stomach (fourth numerically) and of the small bowels is usually found of a dark colour (congested), and there may be extravasation into the structure of the bowels. The lymphatic and mesenteric glands are enlarged, softened, and infiltrated with blood as in anthrax and swine fever. Every part of the carcase is nocuous, and should not be allowed to be used as food either for man or animals. UrcEinia.—(i) This term signifies the absorption of various products from the bladder owing to the retention of the urine therein; this may occur as the result of paralysis of the bladder or spasm of its neck, occlusion of the urethra by thickening as the result of disease of its structure in some part of its course, by obstruction in the lodgment of urinary calculi, clots of blood, or coagula of lymph; in the ox by the formation of carbonate of lime concretions on the hair of the prepuce, and in sheep and cattle fed under cover in dirty houses (as is frequently done on the continent) from ulceration of the prepuce and constriction in the healing process thereof, producing phymosis. Concretions on the hair of the prepuce are usually formed when sheep and cattle are feeding on turnips grown with lime salts, and occasionally in summer when lime or bone manure has been used as a top dressing. In cattle, too, fed on unlimited quantities of wheat straw grown on limestone land, calculi form in the bladder and become arrested in the urethra in their passage out with the urine,