DESGBIPTIOID OF PLATES. xxv 



IKS< KUTION OF PLATE VII L 



Bacillus diphtherias and Bacillus typhosus. 



following p. 382. 



FIG. 1. ( 'ovt-r-glass preparation from a pure-cultivation of Bacillus diph- 

 therias on blood serum ; obtained from the throat in a typical case of 

 diphtheria. Stained with gentian-violet, x 1200. 



FIG. 2. Cover-glass preparation from a pure-cultivation of Bacillus typhosus 

 on nutrient-agar ; from the spleen in a case of typhoid fever. Stained 

 with gentian-violet, 



DESCRIPTION OF PLATES IX. AND X. 



Swine Fever. 



Following p. 348. 



PLATE IX. Part of intestine from a typical case of swine fever, showing 



scattered ulcers and ulceration of the ileo-csecal valve. 

 PLATE X. From the same case of swine fever. The lungs were extensively 



inflamed and partly consolidated, and the lymphatic glands were enlarged 



and of a deep red or reddish -purple colour. 



DESCRIPTION OF PLATE XL 

 Bacillus tuberculosis. 



Following p. 378. 



The figures in this plate represent the bacilli of tuberculosis in 

 different animals, examined under the same conditions of amplifica- 

 tion and illumination. X 1200. Lamp-light illumination. 



FIG. 1. Bacilli in pus from the wall of a human tubercular cavity. In 

 this specimen the bacilli are shorter than those in tubercular sputum, 

 and are very markedly beaded. 



FIG. 2. Bacilli in pus from a tubercular cavity from another case in man. 

 They are present in the preparation in enormous numbers. The proto- 

 plasm occupies almost the whole of the sheath, and the bacilli are 

 strikingly thin and long. 



Fi<;. ".. J'acilli in sputum from an advanced case of phthisis, showing 

 the ordinary appearance of bacilli in sputum ; some beaded, others 

 stained in their entirety ; occurring both singly and in pairs, and 

 in groups resembling Chinese letters. 



FKI. 4. Bacilli in a section from the lung in a case of tuberculosis in man. 

 The bacilli in human tuberculosis are found in, and between, the tissue 

 cells ; and sometimes, as in equine and bovine tuberculosis, in the 

 interior of giant cells, but not so commonly. 



FH:. . From a cover-glass preparation of the deposit in a sample of milk 

 from a tubercular cow. The bacilli were longer than the average 

 length of bacilli in bovine tissue sections, and many were markedly 

 beaded. 



