DESCRIPTION OF PLATE I. 
Fic. 1.—Diphtheria bacillus (long form) from a young 
culture on blood-serum. Léffler’s blue; x 1000. 
Fic. 2.—Diphtheria bacillus (short form) and Hoff- 
mann’s bacillus. From young cultures on blood- 
serum. Ld6ffler’s blue; x 1000. 
Fic. 3.—Pneumococci in sputum from a case of pneu- 
monia. Stained with dilute carbol fuchsin and 
thoroughly washed; x 1000. 
Fic. 4.—Anthrax bacilli. The lower portion of the 
field shows bamboo-like chains and spores, and is 
taken from cultures. Methylene blue; x 1000. 
The portion showing spores is stained with carbol- 
fuchsin, decolorised by brief immersion in methy- 
lated spirit, and counterstained in methylene blue. 
Fic. 5.—Pus showing streptococci. Stained by Gram’s 
method, counterstained with eosin; x 1000. 
Fic. 6.—Pus showing gonococci and staphylococci. 
Stained by Gram’s method and counterstained 
with dilute carbol-fuchsin; x 1000. 
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