54 NEW YORK STATE MUSEUM 



Avas maintained at lOO pounds: 4 pounds of Grasselli's arsenate 

 of lead and 3 pounds of copper sulfate with lime enough to 

 satisfy the ferrocyanide test was employed for each 50 gallons of 

 the mixture. 



The calyx lobes were mostly well turned back and all the petals 

 were off; the pollen cells had begun to brown though there was no 

 wilting of the stamen bars. 



Owing to interruptions by rain noted above, but five ex- 

 perimental trees of plot 4 were sprayed, the northwestern one 

 not being treated. The three southernmost rows of plot 4 were 

 sprayed mostly from the north side, except the barrier trees on 

 the west end of row 3 counting from the barn. Observations 

 showed that the experimental trees in particular were very w^ell 

 covered with the poison. 



Spraying was -continued June 2, plot 4 being completed in the 

 morning. The experimental trees of plot i Avere sprayed at 

 100 pounds pressure. There was practically no penetration to 

 the inner calyx cavity. The tips of the pistils and stamens were 

 dead and the calyx lobes partially closed. The afternoon was 

 fair Avith a light breeze. 



Plot 7 Avas sprayed June 3 Avith a pressure of 150-60 pounds, 

 though tree 7 E had its Avestern side sprayed Avhen there Avas a 

 very Ioav pressure owing to clogging of the pump. The pressure 

 Avas not constant and much of the time the nozzles Avere held 

 too far aAvay to give the best results, a fact strikingly illus- 

 trated by the condition of the fruit at picking time. 



