108 



SEVENTEENTH REPORT. 



tube of the fungus became much distorted, the cells being swollen 

 in some cases so as to be almost unrecognizable. This seemed to 

 be followed by a complete cessation of growth, so that it is possible 

 that while the spore might germinate it would not be able to resist 

 the action of the fungicide on the germ tube. 



This is one of the reasons that Burrill's method is so superior to 

 mere temporary immersion of spores in the fungicide, and may be 

 the explanation of the apparentlj' contradictory results of Frank's 

 experiments as contrasted with those here reported. 



TKSTS WITH '^'DRY BORDEAU.'^" 



This is a commercial chemical compound and was used according 

 to directions. A dilution of 10 lbs. to 50 gallons of water is recom- 

 mended and it was made up by dissolving 2 gm. of the dry material 

 in 78 cc. of water, this giving the equivalent of the dilution recom- 

 mended. 



TABLE XV.— FUNGICIDAL VALUE OF DRY BORDEAUX. 



SECOND SERIES. 



The "Dry Bordeaux" mixture seemed perfectly effective in its 

 fungicidal action, as no germination was noted in the set. 



10 



TESTS WITH ATOMIC SULFUR. 



This is another proprietary compound and is recommended for 

 use in a dilution of 5 lbs. to 50 gallons of water. The mixture as 

 used in the tests was made as follows; and is equivalent to the dilu- 

 tion recommended : — 



1 gm. Atomic sulfur 

 80 cc. water. 



9. Sherwin-Williams Co. 

 10. Thorasen Chemical Co. 



