7 
7 
: 
| 
ee ee 
—_ ~ 

nag ee 
THE ADMINISTRATIVE BULLETIN 
From this time on, notes on general administrative matters will 
probably occupy a minor place in the "Monthly Letter," as material of 
this kind is usually distributed through other channels, notably the 
numbered series of Bureau administrative memoranda. 
It is believed, however, that the entire Bureau personnel could 
read with interest and profit the regular monthly issues of the Depart— 
ment’s new publication, "The Administrative Bulletin." This paper con- 
tains not onlya summary of current administrative orders and decisions, 
but discussions of many matters of common interest, such as the Retire- 
ment Act, the Saturday half-holiday legislation, etc., and many helpful 
suggestions on good business practice, both in the Federal service and in 
the commercial field. 
DECIDUOUS FRUIT INSECTS 
H. W. Allen and A. J. Warren, Moorestown, N. J., have completed 
the season's work on the experimental mass liberation of the parasite 
Trichogramma minutum Riley for the protection of mid-season and late 
peaches from the oriental fruit moth. Mr. Allen says: "In view of the 
wholesale rearing and liberation of this parasite, it is considered that 
our results are most interesting. It may be added that our liberations 
were made under the most nearly ideal circumstances obtainable, and prob— 
ably under conditions much more favorable than would exist in large-scale 
practical operations. The table below (omitted) indicates that there was 
a slight reduction of fruit infestation in eight of the ten experimen- 
tal blocks over their respective controls, but in only one instance was 
this reduction of significant proportions (14.1 per cent)." 
In their work on recovery of parasites of the oriental fruit moth 
from peach twigs, H. W. Allen and Earl Lott, of the Moorestown laboratory, 
report: "The most interesting development for the month has been the 
finding of a Macrocentrus species closely resembling ancylivorus much 
more widespread and in larger numbers than heretofore suspected. This 
has been recovered from New York, New Jersey, Pennsylvania, Connecticut. 
Ohio, Virginia, and West Virginia. This species was especially abun- 
dant in collections from Orange and Rockland Counties, N. Y., having 68 
per cent parasitism, other parasites 22 per cent, and host emergence 
but 10 per cent, Heretofore ancylivorus has been considered dominant in 
that area." 
Summarizing a detailed report of biological studies of the peach 
borer (Synanthedon exitiosa Say), 0. I. Snapp, of the Fort Valley, Ga. 
laboratory, includes the following statement: "The 59 females which com- 
pleted their oviposition during the month of September deposited 35,989 
eggs, or an average of 610.0 eggs per female. The 64 cvipositing fe- 
males deposited a total of 38,551 eggs to September 30. The total num- 
ber of eggs deposited per female varied from 36 to 1,257. One individuai 
deposited a total of 826 eggs within a 24-hour period." 
