VI DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 
with the detailed life history of this insect in an important fruit 
region. Similar studies are under way or planned covering the prin- 
cipal fruit sections of the United States. A report will shortly be 
prepared dealing with the codling moth in Michigan. 
During the past few years there has been considerable interest 
aroused, following the experience of certain western entomologists 
and orchardists, in the practicability of controlling the codling moth 
by a single thorough application immediately after the falling of the 
petals. This so-called one-spray method has been compared with 
the usual spraying schedule in vogue in the East by numerous east- 
ern entomologists, and the results of the investigations of this 
bureau on the relative merits of these two spraying methods in the 
control of the codling moth and also in the control of the plum 
curculio are detailed in Part VII. 
The final paper, Part VIII, reports on tests of sprays against 
the European fruit Lecanium and the European pear scale, two 
serious scale-insect enemies of deciduous fruits in California. 
A. L. QUAINTANCE, 
In Charge of Deciduous Fruit Insect Investigations. 
