62 MISCELLANEOUS PAPERS. 



Table VIII. — Effect of copper sulfate upon Bacillus Uguifaciens phosphorescens. 



Duration of exposure to action 

 of copper sulfate. 



hour . . 

 2 hours . 

 6 hours . 

 24 hours , 



Check. 



Colonies. 



16, .500 

 1.5, 800 

 23, 000 

 36,000 



1 part copper sulfate to — 



50,000 

 parts of 

 water. 



Cofonies. 



16, 000 















100,000 

 parts of 

 water. 



Colonies. 



4,500 



5 











500,000 



parts of 



water. 



Colonies. 



10,400 



2,900 



640 



60 



1,000.000 

 parts of 

 water. 



Colonies. 



13,000 



7,300 



7,000 



5,300 



Table IX. — Effect of copper sulfate upon pink yeast. 



Table X. — Effect of copper sulfate upon Bacillus coli. 



Table XI. — Effect of copper sulfate upon sulfur yellou- bacillus. 



Table XII. — Effect of copper sulfate upon Pseudomonas radicicola {soy). 



Duration of exposure to action 

 of copper sulfate. 



hour . . 

 2 hours . 

 C hours . 

 24 hours 



Check. 



Colonies. 



1,900 



1,800 



2,100 



18, 000 



1 part copper sulfate to — 



10,000 

 parts of 

 water. 



Colonies. 



.520 















25,000 

 parts of 

 water. 



Colonies. 



1,300 











.0 



50,000 



parts of 



water. 



Colonies. 



2,800 



45 











100.000 



parts of 



water. 



Colonies. 



6.50 















.500,000 

 parts of 

 water. 



Colonies. 



520 



25 











1,000,000 

 parts of 

 water. 



Colonies. 



3,100 



1,100 



30 







100— VII 



