34 BACTERIOLOGICAL DIAGNOSIS. 



The bacillus of tetanus. 



,, tuberculosis. 



leprosy. 



The actinomycosis fungus. 



The following important pathogenic bacteria do not 

 stain by Gram's method : 

 The gonococcus. 



Diplococcus intracellularis meningitidis (Weich- 

 selbaum). 



Still's diplococcus of posterior meningitis. 

 The pneumo-bacillus. 

 The bacilli coli communis. 

 The bacillus of glanders. 



,, ,, typhoid fever. 



,, ,, influenza. 



plague. 



,, ,, soft sore. 



The vibrio of Asiatic cholera. 



EXAMINATION OF FILMS. USE OF MICRO- 

 SCOPE. 



Daylight is the best illuminant for microscopic work, 

 and the light reflected from a white cloud opposite the 

 sun is best of all. Direct sunlight is useless, but the 

 light obtained from a ground glass window on which 

 the sun is shining is very good. 



For work at night the light from an incandescent gas- 

 burner at a distance of two or three feet is excellent, 

 but an ordinary paraffin lamp will answer quite well. 



Having arranged for a suitable source of light turn 

 the flat mirror uppermost and move it about until 



