﻿330 



The Philippine Journal of Science 



1914 



glass. I have used these methods in the study of the growth 

 rate of Bacterium coli commune.^ 



6. The organism may be drawn into a short capillary tube 



FlO. 9. Two-movement pipette holder, pipette and isolation chamber arranged to illustrate 

 method of transferring single isolated bacteria by means of a perforated mica plate. 

 ms, mica plate ; cv, small cover glass over perforation ; x, large cover glass ; p, pipette ; 

 g, up-and-down adjustment of holder moved by screw /; r, to-and-fro movement regulated 

 by screw s. (From The Journal of Infectious Diseases.) 



of very small diameter and the tube placed on the underside of 

 the cover where growth may be observed under high iJowers — ^the 

 oil immersion, if desired. Glass tubing is drawn out into a very 



'Joum. Infect. Dis. (1908), i, 379. 



