XXvi DESCRIPTION OF PLATES. 



Fig. 6.— From a section of the brain in a case of tubercular meningitis in a 

 calf, showing a giant cell containing bacilli with the characters usually 

 found in sections of bovine tuberculosis. 



Fig. 7. — From a section of the liver of a pig with tubercle bacilli at the 

 margin of a caseous nodule. 



Fig. 8. — From a cover-glass preparation of a crushed caseous mesenteric 

 gland from a rabbit infected by ingestion of milk from a cow with 

 tuberculosis of the udder. 



Fig. 9. — From a section of lung in a case of equine tuberculosis, showing a 

 giant cell crowded with tubercle bacilli. 



Fig. 10.— From a section of lung from a case of tuberculosis in the oat, with 

 very numerous tubercle bacilli. 



Fig. II. — From a cover-glass preparation of a crushed caseous nodule from 

 the liver of a fowl, with masses of bacilli. These are for the most part 

 short, straight rods ; but other forms, varying from long rods to mere 

 granules, are also found. 



Fig. 12. — From sections of the liver and of the lung in a case of tubercu- 

 losis of a Rhea. Isolated bacilli are found, as well as bacilli packed in 

 large cells, colonies of sinuous bacilli, and very long forms with terminal 

 spore-like bodies and free oval grains. 



The preparations from which these iigures were drawn were all 

 stained by the Ziehl-Neelsen method, with the exception of the first, 

 which was stained by Ehrlich's method. 



DESCEIPTION OF PLATE XII. 

 Tubercular Mammitis. 



Following p. 394. 



Fig. I. — From a section of the udder of a milch cow.- The tubercular deposit 

 is seen to invade the lobules of the gland. Lobules comparatively healthy 

 are marked ofE, more or less sharply, from the diseased ones in which the 

 new growth in its progress compresses and obliterates the alveoli. Stained 

 by the Ziehl-Neelsen method and with methylene-blne. x 50. 



Fig. 2. — Paxt of the same preparation. On the right of the section part of a 

 healthy lobule is seen. On the left a lobule is invaded by tubercular new 

 growth composed of round cells, epithelioid cells and typical giant cells. 

 Tubercle bacilli can be seen both singly and collected in groups. They 

 are found in and between the cells, and in the interior of giant cells. 

 Bacilli may be seen between the cells lining an alveolus and projecting 

 into its lumen, x 800. 



DESCRIPTION OF PLATE Xm. 

 Tuberculosis in Swine. 



Following p. 400. 



Section of liver of a pig with scattered tubercular nodules. Microscopical 

 sections of the liver showed tubercle bacilli in very small numbers. 



