Investigations concerning bovine tuberculosis : with special reference to diagnosis and prevention / conducted under the direction of D.E. Salmon.
- Date:
- 1894
Licence: Public Domain Mark
Credit: Investigations concerning bovine tuberculosis : with special reference to diagnosis and prevention / conducted under the direction of D.E. Salmon. Source: Wellcome Collection.
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![Abdomen: lu one of the mesenteric glands there is a group of three firm yellowish tubercles (the whole one-fourth inch in diameter) in the cortical portion. In a neighboring gland there is a similar group of somewhat larger tuberculous nodules. The glands are not enlarged and there is no infiltration around the foci. JSfo. 356.—Cow, fifteen-sixteenths Holstein, 9 years old. Weight, 1,000 pounds. Calved November. 1892; is giving milk. .Served by bull March 6,1893. but is not pregnant. May 1, 1893, midnight: First injection, 0.25 cc. tuberculin S. Before injection, maximum temperature 102' (4j). m.); after injection, reached in seventeen hours, 104° (5 p. m.). (For complete record see p. 68.) May 25,1893, midnight: Second injection, 0.25 cc. tuberculin 8. Before injection, maximum temperature 102° (6 p.m.); after injection, reached in eighteen hours, 102. 8° (6 p. m). (For complete record see p. 73.) June 12, 1893: Killed for examination. Autopsy.—Thorax: In the caudal lobe of the left lung there is a tuberculous focus, situated directly under the pleura of the dorsal surface close to the median edge and4 or 5 inches from the caudal tip. The pleura over this focus is slightly opaque, and beneath it are three small tuberculous nodules, two of which contain a caseous center. The«focus itself consists of a central soft caseous mass, inclosed in a rather thick-walled capsule and surrounded by a zone of infiltrated tissue one-fourth to one-half inch thick. The infiltration consists of tubercles up to one-eighth inch in diameter, many of them caseous. An air tube is not traceable to it. In the bronchus of this same lobe near its origin and in the trachea are 2 gray- ish tubercular excrescences. The one in the trachea is about one-half inch in diam- eter and projects one-half inch above surface. The center is depressed. The whole appears as if the mucosa were lifted up by tubercular infiltration of the sub- mucosa. Section of the tumor shows a caseous mass beneath. The excrescence in the bronchus is more convex and projecting, otherwise there are no marked differences. In the large posterior mediastinal gland near one end are 4 completely calcified foci about one-eighth to one-fourth inch in diameter. The gland itself is not enlarged, and these foci feel as firm as bullets in the interior of the gland tissue. No. 357,—Cow, fifteen-sixteenths Holstein, 8 years old. Weight, 1,000 pounds. Calved July 1, 1893; is giving milk. May 1, 1893, midnight: First injection, 0.25 cc. tuberculin S. Before injection, maximum temperature 102.8° (6 p.m.); after injection, reached in fourteen hours, 103° (2 p. m.). (For complete record see p. 68.) May 25, 1893, midnight: Second injection, 0.25 cc. tuberculin 8. Before injection, maximum temperature 105° (10 p.m.); after injection, 102.5° (7 a. m.). (For com- plete record see p. 73.) The elevation in temperature previous to inoculation was due to an unknown cause; excepting it the cow was apparently in good health. She belonged to the last of the series of tests in this herd, else a third injection of tuberculin would have been made. (See Case No. 318.) July 13, 1893: Killed for examination. Autopsy.—Tuberculous lesions not discoverable. In the u.dder a number of com- pletely yellow regions indicating fatty degeneration of gland substance. Marked interlobular and sub])leural emphysema of the cephalic and ventral lobes of the right lung and of the ventral lobe of the left lung. Uterus contains a milky, very foul-smelling lluid. (Jalf born thirteen days ago. No. 358.—Cow, fifteen-sixteenths Holstein, 6 years old. Weight, 1, 000 pounds. Calved summer of 1892; is still giving milk. Pregnant since January 20, 1893. May 1, 1893, midnight: First injection, 0. 25 cc. tuberculin S. Before injection, maximum temperature, 102^ (5 p. m.); after injection, reached in nineteen hours, 105.6' (7 p. m.). (For complete record see p. 68.)](https://iiif.wellcomecollection.org/image/b21783111_0058.jp2/full/800%2C/0/default.jpg)
