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.
48/196 page 44
![Mesenteric glands: Two are involved. One contains three foci, each about one- eighth inch in diameter, two caseous and one calcareous. The other contains a partly caseous, partly calcareous, focus three-eighths inch in diameter, and one one- eighth inch in diameter. Several glands contain worm tubercles. Liver: Two portal glands are moderately enlarged. One contains three firm, dry, casoousfoci, the other contains two quite small yellowish foci. In the large posterior lobe of the liver are two contiguous tuberculous foci embedded in the liver tissue and reaching the convex surface. One of these is fully 3 inches long and 2 inches thick. The other is about 1 inch in diameter. They are both made up of an abundance of dense connectLve tissue inclosing a large num- ber of small, partly caseous foci, some of which are one-fourth inch in diameter. The diaphragm is adherent to the liver over these foci. In the region of the second stomach, between it and the diaphrag-m, there are firm adhesions occasioned by traumatic inflammation and suppuration. When the adhesions are severed, several masses of firm, almost cartilaginous tissue (indurated glands) ( ?) are found in this adherent area surrounded by more or less gelatinous infil- tration. The firm masses are softened centrally (abscesses). No.SSd.—Holstein cow, 3 years old. Weight, 1,000 pounds. Calved September, 1892; is giving milk. Pregnant since February 6, 1893. March 21, 1893, midnight: First iujection, 0.4 cc. tuberculin K. Before injection, maximum temperature, 102.4^ (3 p. m.); after injection, reached in fifteen hours, 102.9° (3 p. m,). (For complete record see p. 66.) April 12, 1893, midnight: Second injection, 0.25 cc. tuberculin S. Before injec- tion, maximum temperature, 101.8° (9 a.m.); after injection, reached in seventeen hours, 102.5° (5 p. m.). (For complete record see p. 71.) May 25, 1893, midnight: Third injection, 0.25 cc. tuberculin S. Before injection, maximum temperature, 102.2° (6 p. m.); after injection, reached in seventeen hours, 102.7° (5 p. m.). (For complete record see p. 74.) July 6, 1893: Killed for examination. Autopsy.—In the left bronchial gland a soft, caseous focus about one-half inch in diameter situated in the center of the gland. In the mediastinal gland near it, rest- ing loosely on the root of the left bronchus, a similar focus. (Unfortunately the tho- racic glands, removed for further examination in the laboratory, were rejected through some inadvertence. The remaining glands were of normal size, and if tuber- culous the foci must have been quite small.) No. 335.—Jersey cow, 5 years old. Weight, 700 pounds. Calved .January 28, 1893, and has not been served by bull since; is giving milk. March 21, 1893, midnight: First injection, 0.4 cc. tuberculin K. March 22, 9:30 to 10:30 a. m.: Marked trembling. Before injection, maximum temperature, 102.2° (8 p. m.); after injection, reached in seventeen hours, 107.8° (5 p. m.). (For complete record see p. 66.) April 12, 1893, midnight: Second injection, 0.25 cc. tuberclin S. Before injection, maximum temperature, 102° (4 p. ni.), after iujection, reached in twelve hours, 105.2° (12 a.m.) (For complete record see ]i. 71.) April 25, 1893: Killed for examination. Autopsy.—Left retropharyngeal gland is about 3^ inches long and 1 to Ih; inches thick, more or less nodular or lobulated. It contains an aggregation of soft, caseous foci from one-fourth to one-half inch in diameter. Foci in periphery of gland smaller and firmer than those centrally situated. Thorax: The large posterior mediastinal gland contains two small firm caseous foci; the contiguous gland contains about ten foci one-eighth to three-sixteenths inch in diameter. Of the bronchial glands the small one near the root of right main bronchus con- tains a firm caseous mass equal to one-half the bulk of the gland.](https://iiif.wellcomecollection.org/image/b21783111_0048.jp2/full/800%2C/0/default.jpg)
