MICHIGAN ACADEMY OK SCIENCE. 



311 



Table 11. 



Toxic Effect of Various Liquids: 



Van Tieghem Cells on Clover Leaflets. 



a Liquid merely heated to boiling:, 

 b Boiled before toluol was added. 



A glance at the results in the above table will show that if any enzyme 

 was precipitated by the alcohol, it had no effect upon the leaves, wounded 

 or unwounded. The same holds true for the extract of the fungus growth. 

 However, the results of the preceding experiment are confirmed by the 

 action of the filtrate "B." It is also evident from the control that the 

 addition of toluol as a preservative has no injurious effect upon either 

 the host of the filtrate, but that boiling inactivates the toxic principle 

 in the filtrate. 



