BY it. GKEIG-SMITH. 



665 



trol. ii second series i-eceixed water. The soil had been treuteil witli 

 toluene, and liad been heated to 65°. 



ExPKRiMKNT iii. — Thk Addition of Bad. pulidum. 



\^ cUiytf 



The expex'iment shows the same rapid rise following the addition 

 of one of the components of the suspension used in Expt. ii., and 

 the control is similar in its behaviour to the heated suspension 

 series. As a whole, the experiment tells us that the same general 



