Explanation of Plate 63. 



MYCOBACTERIUM LEPR.E (Arm. Hansen) Lehm. and 

 Neum. 



BACTERIUM INFLUENZA, E. Pfeiffer. 

 BACTERIUM PESTIS, Lehin. and Neum. 



I. Mycobacterium leprae. Giant cell from leprous 

 ulcer of epiglottis. X 1.000. Stained by Rus- 

 ell' s method. (Copied from Seif ert and Kahn : 

 "Atlas d. Histopath. d. Nase," 1875, PI. 38, 

 Fig. 75 b.) 



II. Mycobacterium leprae. Transverse section of 

 blood-vessel in a leprous testicle; bacilli in 

 endothelium and in a white blood globule. 

 Stained according to Gram and with Bismarck 

 brown, eosin, bergamot oil. x 1,000. 



III. Mycobacterium leprse. Longitudinal section of 

 ulnar nerve. Staining as above. (Copied 

 from Lie: "Path. Anatomie d. Lepra," Arch, 

 f. Dermatol. und Sypli., Vol. XXIX., 1895, 

 PL VI.) 



IV. Streptobacilli in soft chancre. Section of an un- 

 treated chancre, twelve days old. Stained by 

 Unna's method. (Copied from Petersen : " Ue- 

 ber Bacillenfund bei Ulcus molle," C. B., 

 XIII., PI. 4.) 



V. Bacterium influenzas. Smear preparation from 

 the nasal secretion, x 1,000. Stained with 

 fuchsin. 



VI. Bacterium pestis. Smear preparation from lym- 

 phatic gland of a rat which died suddenly. 

 X 1,000. (Copied from Yersin, semi-schematic 

 on account of imperfect photogram, Annales de 

 VInstitut Pasteur, 1894, PI. XII., Vol. 8, 

 Fig. 2.) 



VII. Bacterium pestis. Bouillon pure culture. (Cop- 

 ied, as cibove, Fig. 3.) * 1,000 



63 



