HANGING DROP CULTURES. 



11 



i-i like manner, and covered by n bell jar, sterilized by 

 washing in 1 :10(X) bichloride of mercury. 



{()) With fi sterile loop farefuUy place drops of 

 broth (sterile) on the cover p-lasses. 



(c) Lightly inoculate these drops with the respective 

 bacteria. 



(d) Invert these drops over the cell of a hollow 

 ground slide, previously sterilized, and having edge of 

 cell ringed with vaseline. 



{e) Place in the incubator at BT'^C, on slide rack. 



tl 



n. 



iU! 





