Publisher's Synopsis
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1892 edition. Excerpt: ... DISEASES ASSUMED (OR PROVED) TO BE DUE TO THE ACTION OF MICRO-PARASITES. i. Anthracoid Diseases. (i.) Black Quarter.--Striking, Blood Striking, Black Spauld (Scot). kHIS malady, which is classed amongst the anthracoid-L diseases, is seen in the ox and in the sheep, and usually in young animals only; occasionally, however, adults fall victims to its destructive influence. Formerly it was attributed to dietetic influences; but while these undoubtedly play a great part in its production, there is required a second element for its production, viz., a bacillus, which is found abundantly in the fluids of the local lesions, but has only rarely been demonstrated in the blood, though an indirect proof that it does reside in that fluid is afforded in the fact that if some of the fluid from the diseased tissues is injected into the circulation of a healthy animal, and an injury sufficiently severe to produce extravasation of blood into the tissues in any part of the body is inflicted, the characteristic local lesions quickly develop at the seat of the injury. In cattle the lesions are usually localized in the limbs, --hence the terms "Black Quarter," " Quarter III," " Black Leg," "Leg III,"--occasionally in the neck and on the sides or back, but in sheep they are frequently more diffused. Death results in a very few hours after the appearance of the symptoms, and if the animal lives for a sufficient length of time, mortification of the affected parts ensue, and gases are liberated which produce marked emphysema. On post-mortem examination the tissues of the affected part present to the eye the characteristics of sphacelus, infiltration of blood, or of bloody serum, being very extensive and very deep. The blood itself is dark in colour, but its...
