BUREAU OF ANIMAL INDUSTRY. 



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a space 4 iuches in diameter; they presented different stages of devel- 

 opment, some containing a thick yellow or inspissated pus, while others 

 were undergoing a caseous degeneration or calcification, and still others 

 appeared as small, Indurated, brown, or reddish, circumscribed spots 

 in the interlobular tissue. There was very slight adhesion between 

 the visceral and parietal pleura at the inferior and anterior extremity 

 of the right lung ; the superior and posterior four-fifths of the right lung 

 was apparently "healthy ; on the left side there existed extensive adhe- 

 sion of the posterior lobe of the left lung to the side of the chest and 

 diaphragm, implicating almost the whole of the adjacent side of the 

 pericardium ; a large amount of firm gelatinous exudation and strong 

 fibrous bands united the inferior, posterior, and central portions of the 

 posterior lobe linnly to the pericardium, diaphragm, and costal pleura ; 

 no abnormal effusion was present in either side of the chest; no indica- 

 tions of the recent affection of the pleura were seen ; the anterior lobe 

 of the left lung contained numerous tubercles and abscesses from the 

 smallest visible size to half an inch in diameter ; many tuberculous 

 nodules coalesced so as to form large irregularly-shaped masses; in the 

 posterior lobe, beginning at the bifurcation of the trachea and extend- 

 ing downwards and backwards, was discovered a cavity 10 inches in 

 length, which contained a pint of fluid of a grayish-black color of very 

 offensive odor, holding in suspension disintegrated lung tissue; also 

 in this cavity was discovered a mass of infarcted, necrosed lung tis- 

 sue, weighing 2 pounds; the part nearest the right lung was break- 

 ing down and liquefying. Another mass of dead lung, weighing 1 

 ounces, of a yellow, granular, or caseous appearance, indicating that it 

 was much older than the larger mass, was found lying in and partiallv 

 buried in a separate sack which communicated with the larger cavity. 

 The mass of infarcted necrosed lung on section presented a reddish- 

 brown appearance, and the lobules were distinctly outlined as well as 

 the remains of the larger blood-vessels and bronchi. The walls of the 

 cavity were composed of fibrous tissue one-quarter inch thick, and 

 remains of blood vessels extending into and across the cavity. The 

 antero-superior portion of the right lobe of the liver presented one 

 compact mass of tubercular nodules, and throughout the central parts 

 of this organ numerous tubercles were seen. One measuring 2 inches 

 iu diameter was located at the transverse fissure, and was undergoing 

 calcification. In the abdominal lymphatic glands there were masses 

 of compact tuberculous matter encysted in strong fibrous capsules, one 

 of which measured 3 inches in diameter. Nearly all of the tubercles 

 presented a bright yellow 7 color on section, and but tew gray tubercles 

 were seen, and then only in the lung tissue. 



Dr. Trumbower sent parts of the lungs and liver of this animal to 

 Washington for my examination. The cow had evidently been affected 

 with tuberculosis, but the encysted mass of dead lung was a lesion 

 Which is not produced in this disease, but which is a frequent result 

 of contagious pleuropneumonia. It seemed possible, therefore, that 

 the two diseases might have existed at the same time in this animal, 

 though the fact that we knew of no pleuro-pneumonia in that section 

 of the country made the presence of this disease appear very doubtful. 



On investigating the condition of affairs at Mr. Clarke's farm it was 

 learned that his animals had been suffering from a disease that had 

 caused the death ol* Several duriug the spring and summer. A cow 

 Which had been sold toC. P. Coggeshall and taken to the farm of Mr. 

 John Boyd, of Elmhurst, was very sick, and a second cow bought by 

 Mr. Boyd was also sick. On the 12th of August 1 visited Mr. Boyd's 



