. The effect of tuberculosis vaccination upon cattle infected with tuberculosis. Tuberculosis in cattle. 16 are coated with nodular masses that are characteristic of pearl disease. There are numerous caseous areas in the substance of the liver. The bronchial lymphatic glands are enlarged to several times their natural size and are caseous. This is a case of "pearl disease" in the most advanced form and of widest distribution. Fig. 12.—Red-and-white Bull (16,024). 1902. December 19. tuberculin ; reaction. 1903. February 2. " " to 106° F. 1904. September 17.
. The effect of tuberculosis vaccination upon cattle infected with tuberculosis. Tuberculosis in cattle. 16 are coated with nodular masses that are characteristic of pearl disease. There are numerous caseous areas in the substance of the liver. The bronchial lymphatic glands are enlarged to several times their natural size and are caseous. This is a case of "pearl disease" in the most advanced form and of widest distribution. Fig. 12.—Red-and-white Bull (16,024). 1902. December 19. tuberculin ; reaction. 1903. February 2. " " to 106° F. 1904. September 17. Fig. 12. Right lung. Right bronchial gland. Necropsy. Weight 524 pounds; good condition. The right bronchial gland is somewhat enlarged and contains a •calcareous nodule. In the anterior lobe of the right lung there are numerous nodules containing pus. These are surrounded by firm, fibrous walls. The intervening lung tissue is collapsed. The observations here recorded show a decided difference between the lot of six young cattle that were treated and the six that were not treated. Since the two lots of animals were in all respects as nearly equal as possible at the begin- ning of the experiment, and since they were cared for all together and in precisely the same way, excepting in respect to specific treatment, it is but fair to conclude that the six ^treated animals were favorably influenced by the treat- Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Pearson, Leonard, 1868-1909. [from old catalog]; Gilliland, Samuel Howard, 1877- [from old catalog] joint author. [Philadelphia?
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