46 LABORATORY BACTERIOLOGY 



Measure carefully with the filar micrometer the length and 

 thickness of v individual bacteria in the stained preparation 

 ofthe^ micr-ococcus. Record the measurements in microns 

 (written /a). (For the use of the micrometer see appendix, 

 also chapter on magnification and micrometry in " The Micro- 

 scope," by Professor S. H. Gage.) 



Inoculate a tube of bouillon, one of gelatin, and one of agar 

 from a culture (furnished) of each of the following genera of 

 bacteria. 



A micrococcus (staphylococcus form) . Micrococcus . . 

 A sarcina Sarcina . . . 



