AND THE MECHANIC ARTS. 



513 



preferred. Plant another set o( trap squash seed a week or ten 

 days after the main crop has been started. As soon as the 

 plants of the main crop begin to run, If they are cucumbers, the 

 tobacco or lead treatment should be stopped and the plants 

 treated thoroughly with Bordeaux mixture to protect them from 

 fungous disease. It is possible that when cucumbers are to be 

 protected so many of the beetles will congregate on the trap- 

 squash that treatment of the ouculnbers may be unnecessary. 

 The grower will find that the rapid growth induced by good 



Pie. 42. Spray rod with nozzle attached at right angles to facilitate 

 spraying from above as shown at A, and from beneath as at B. 



fertilizing will help the plants quickly to grow beyond the 

 power of the beetles to harm them. As Smith suggests, clean 

 farming, by depriving the adults of good wintering places close 

 at hand, may go far toward reducing the number to be contended 

 with the following spring. 



The larva of the striped cucumber beetle does so compara- 

 tively little damage that small effort has been made to flndi a 

 way of combating it. Fitch's suggestion that covering the 

 plants will probably enable them to escape the work of the 

 larva, seems the best for which our present knowledge gives 

 basis. 



