Method of Disintegrating Bacteria. By J. E. Barnard. 595 



the containing vessel into which a lip on this screw-cap loosely 

 fits. Sufficient space remains between the two, as shown in the 

 figure, to allow of some bactericidal agent being placed therein, 



Fig. 73. 



thus effectually preventing the escape of whole bacteria or ground 

 material from the containing vessel. Over the whole of this a 

 cylindrical cap F is placed, and in the top of this cap a metal cone 

 G is fitted, which presses by means of a spring on to the top of the 



