MICHIGAN ACADEMY OF SCIENCE. 



101 



fresh cultures of the fungus. This was done to insure against error 

 in the previous work and give a larger number of counts on which 

 to base the average amount of control secured by the use of dif- 

 ferent strengths of spray. 



BORDEAUX MIXTURE. 



44-50. 



Stock solution of Ca (OH) , 20 cc. 



Stock solution of CuSO^ 20 cc. 



This gives a mixture equivalent to a solution containing 4 lbs. of 

 lime, 4 lbs. of copper sulphate and 50 gallons of water. 



TABLE IV.— FUNGICIDAL VALUE OF 4-4-50 BORDEAUX MIXTURE. 



BORDEAUX MIXTURE. 

 4-3-50. 



Stock solution of Ca (OH) 2 30 cc. & 10 cc. water. 



Stock solution of CuSO^ 40 cc. 



This gives a mixture equivalent to one containing 4 lbs. of cop- 

 per sulphate, 3 lbs of lime and 50 gallons of water. 



