REPORT OF THE STATE ENTOMOLOGIST 1906 65 
He observed a decade ago a marked difference between localities 
cultivated as described above and other places where no attempt had 
been made to check the insects. So many were killed that he pro- 
poses to adopt this measure on the next appearance of this brood, in 
the hope of largely reducing the injury to his fruit trees. He is of 
the opinion that the adults are rather local, remaining as a rule 
near the place of emergence and rarely wandering away to a greater 
distance than 4 mile. 
Preventive measures. There is no very practical method of 
preventing injury by this insect, aside from refraining from 
setting trees a few years before a large brood is due in a locality. 
This caution is timely in respect to brood 12, due to appear in por- 
tions of Albany, Columbia, Dutchess, Greene, Orange, Putnam, 
Richmond, Rensselaer, Rockland, Saratoga, Ulster, Washington and 
Westchester counties and on Long Island in 1911. We would not 
advise the setting of young trees in localities badly infested by this 
brood, after the spring of 1907, and in certain situations where the 
insect is exceptionally abundant, it will be wise to refrain from 
setting out any more fruit trees till after the appearance of the brood. 
Something may be accomplished, as detailed above, by timely cul- 
tivation and rolling, though :t is obvious that these measures can be 
advised only where there is liability of considerable injury to fruit 
trees, or where conditions are such that comparatively little addi- 
tional expense is involved, owing to the fact that there is need of 
cultivating the ground about the time the insects appear. 
More valuable young trees and shrubbery can be protected from 
injuries by inclosing them with netting, preferably the ordinary 
mosquito netting, during the time the adults are abroad. This 
measure is obviously limited in its application to smaller trees and 
shrubs, and, as a rule, will be adopted only to protect the more 
valuable ornamentals. 
WOLUNTARY, ENTOMOLOGICAL SERVICE OF NEW 
YORK SLATE 
Owing to a variety of causes the number of voluntary observers 
communicating with the office has been exceptionally small. This 
is due in part to relatively few important insect depredations, to a 
loss of interest on the part of some, and to the fact that other 
matters in the office prevented giving this branch of the work more 
attention than was absolutely necessary. It will be observed, how- 
