BACTERIUM SEPTIC^MI^ HEMORRHAGICtE 83 



References. — To M. Uinceolatus. Chapters on Micrococcus 

 lanceolatus (diplococcus pneumoniae) in text-books. Welch, Johns 

 Hop. Hosp. Bulletin, Vol. III. (1892), p. 125. 



129. Work for this Exercise. — From the cultures furnished 

 make a hanging-drop and a stained cover-glass preparation 

 from each and inoculate a tube of each medium in the Groups 

 A and B from each culture. 



Examine carefully the hanging-drop preparations and de- 

 scribe the appearance of the bacteria in each. 



Stain the cover-glass preparations with an aqueous solution 

 of methyl-violet and carefully examine and describe the bac- 

 teria. Measure a few of them with the filar micrometer and 

 make a drawing of a few organisms magnified 1000 diameters. 



