312 
PARASITES OF GIPSY AND BROWN-TAIL MOTHS. 
circumstances surrounding its recovery are considered to be highly 
gratifying and significant. 
It is by no means easy to draw a balance which should fairly 
represent the status of the work as a whole in 1910 as compared 
with 1909, but after long consideration it was definitely decided that 
the present status of the parasites was perhaps less favorable to ulti- 
mate success than was the apparent status of the work one year before. 
Recognition of this fact had much to do with the formulation of the 
policy for the continuation of the work in 1911. It is hoped that by 
putting forth an especial effort the small amount of lost ground may 
be regained, and that by 1912 it will be possible to state with assurance 
that the progress hoped for at the close of 1909 has been more than 
equaled, and that the chances are still favorable to the successful 
outcome of the work and to the establishment of an efficient and auto- 
matic control of the gipsy moth by the year 1916. 
It should be understood that the manuscript of this bulletin was 
completed in the first week in January, 1911, and that no more 
recent developments of the situation have been considered in it, 
except for an incidental mention of the progress of Apanteles 
lacteicolor. 
o 
