seed soaked in water only. The set treated with vitrio) contained 

 twenty-eight plants, which were notably weak, and the other set but 

 three weak plants. 



The next trial was with a solution of 10 gallons of water containing 

 5 pounds of blue vitriol (see Circular 5, of Sect. Veg. Path. tl. S. Dept. 

 Ag., p. 5). The seeds were placed in the solutions on May 28, and 

 allowed to remain for three different periods before planting. Exami- 

 nations were made at the dates indicated, the figures showing the 

 number of plants which had appeared above the soil from time to time. 

 One hundred seeds were planted in each case as before. 



II. — Blue vitriol upon corn. 



Here a general retarding effect of the blue vitriol is visible, even 

 when the application was made for the shortest time. The exceptions 

 which appear are not sufEcient to disturb the general result. There 

 was also an enfeebling effect upon the young plants. On June 8 

 there were in the lot from seed which were soaked in water for ten 

 minutes 6 feeble plants, and in that treated with vitriol for the same 

 time, 23 ; in the lot treated with water five hours, 12 ; in that with 

 vitriol, 19 ; in the lot treated with water twenty-four hours, 4 ; in that 

 with vitriol, 22 ; making a total from 300 seeds soaked in water of 22 

 feeble plants, and from the same number soaked in blue vitriol, of 64. 



The next table shows the results of the same solution upon wheat, the 

 dates and conditions being the same as above. 



III. — Blue vitriol upon wheat. 



