124 -MAiXK AGKJCUl.TUKAL KXI'KKI M KXT STATION. 



The surest way of fightini; this pcsi, however, is by spraying 

 with Paris green or arsenate of lead (Disparene). F'or this 

 purpose the pump should be powerful enough to develop a 

 pressure of at least 60 pounds to the square inch, and all parts 

 should- be made of brass and carefully adjusted. The formulas 

 for use on ornamental trees are the same as those which have 

 heretofore been recommended for use in the orchard, vis.: 

 (i) Paris green, i pound; lime, 6 pounds; water, 100 gallons; 

 or (2) arsenate of lead or Disparene, 6 pounds ; water, 100 

 gallons. The lime is added to the first formula to prevent in- 

 jury of the foliage by the Paris green, and should in no case be 

 omitted. The lead arsenate acts slower as a poison than does 

 Paris green, but it adheres to the foliage better. It is impor- 

 tant that spraying be done at once when the attack of canker- 

 worms is discovered, as the insects are much more difficult to 

 kill as they increase in size. 



If more explicit directions for spraying are desired, send to 

 the Experiment Station for directions "How^ to Fight Apple 

 Enemies." 



