PLATE I. 
PHOTOMICROGRAPHS OF BACTERIA MADE BY GASLIGHT., 
Fia. 1.—Streptococcus cadaveris, froma culture in aguacoco; stained 
with fuchsin. x 1,000. (Sternberg.) 
Fic. 2.—Streptococcus Havaniensis. x 1,000. From a photomicro- 
graph. (Sternberg. ) 
Fre. 3.—Bacillus cuniculicida Havaniensis, from peritoneal cavity of 
inoculated rabbit, showing leucocytes containing bacilli and free bacilli; 
stained with fuchsin. x 1,000. (Sternberg.) 
Fie. 4.—Bacillus cadaveris, smear preparation from yellow-fever 
liver kept for forty-eight hours in an antiseptic wrapping (Havana, 
1889); stained with fuchsin. x 1,000. (Sternberg.) 
Note.—All of the above photomicrographs were made with the three- 
millimetre apochromatic hom. ol. im. objective and projection eye-piece 
of Zeiss. 
PLATE I1. 
PHOTOGRAPHS OF COLONIES (IN ESMARCH ROLL TUBES) AND OF TEST- 
TUBE CULTURES. 
Fie. 1.—Colonies of Bacillus leporis lethalis, in gelatin roll tube, 
end of forty-eight hours at room temperature. x5. (Sternberg.) 
Fie. 2.—Colonies of Bacillus coli similis in gelatin roll tube, end of 
twenty-four hours at 22°C. x 10. (Sternberg.) 
Fie. 3.—Stick culture of Bacillus coli similis in nutrient gelatin, enc 
of seven days at 20° C. (Sternberg.) 
Fic. 4.—Stick culture of Bacillus intestinus motilis in nutrient gel- 
atin, end of four days at 22° C. (Sternberg.) 
Fig. 5.—Stick culture of Bacillus leporis lethalis in nutrient gelatin, 
end of eight days at 22° C. (Sternberg.) 
Fic. 6.—Stick culture of Micrococcus tetragenus versatilis in nutrient 
gelatin, end of two weeks at 22° C. (Sternberg.) 
Fic. 7.—Colonies of Bacillus cuniculicida Havaniensis in gelatin roll 
tube, end of forty-eight hours at 21°C. x 10. (Sternberg.) 
Fic. 8.—Colonies of Bacillus coli communis in gelatin roll tube, end 
of forty-eight hours at 22°C. x 10. (Sternberg.) 
