26 The Bulletin. 



winter many more of the insects will be killed, while the coating on 

 the twigs \\'ill be nearly impervions to the yoimg of the few that still 

 remain.' By thus killing the vast majority of the young in the fall, 

 and rendering the tree practically iminhabitable for the few remain- 

 ing progeny in spring, we might (by this theoretical reasoning) 

 almost exterminate the San Jose Scale. No doubt two thorough 

 applications of either one or the other of these remedies would do 

 nearly as well — and we want to emphasize the fact' that no grower 

 should expect to exterminate this insect once it is thoroughly estab- 

 lished on his trees. If he can exterminate it, well and good, but to 

 go at it with the fixed expectation almost inevitably brings disap- 

 pointment, and not infrequently the grower persuades himself into 

 believing that he has exterminated it, only to find later that it has 

 worked destruction while he thought it was not present. Once the 

 San Jose Scale is discovered in an orchard regular yearly treatment 

 should be decided upon and carried out, so far as may be practicable. 

 Sometimes a winter may be passed over without treatment without 

 serious results. 



The matter of controlling this pest depends solely upon the energy 

 and intelligence of the grower whose orchard is infested. The State 

 could not possibly undertake to treat the orchards, nor is it possible 

 for the Entomologist to visit all the infested localities and compel 

 treatment. If a man is too negligent to keep the scale in check it 

 is just as well that his orchard should die, and the fruit-growing 

 industry in the long run will be benefited by his retirement from 

 the business. 



