32 BULLETIN 204, U. S. DEPARTMENT OF AGRICULTURE. 
checking over the work done by these States has been adopted, so 
that very satisfactory work has resulted. In the distribution of 
natural enemies arrangements have been made to cooperate with the 
State officials, and this has resulted in the establishment of more 
colonies of parasites than would otherwise have been possible. An 
arrangement has been made with the Massachusetts State Board of 
Agriculture so that speakers will be furnished to discuss the gipsy- 
moth problem at farmers' institutes. 
In the spring of 1914 a colored poster was prepared showing the 
life histories of the gipsy moth and the brown-tail moth and several 
of the introduced natural enemies. These posters have been dis- 
tributed to all the post offices in the infested district, to granges, 
libraries, and educational institutions. Reproductions from this poster 
have been made in the form of post cards and distributed to schools 
and parties interested in the work. 
During October, 1914, an exhibit covering the gipsy-moth work 
of the bureau was made at the Boston Pure Food and Domestic 
Science Exposition, as a part of the Government exhibit. Living 
parasites were on exhibition as well as mounted specimens and other 
information. 
Efforts are continually being made to advise property owners 
concerning -the methods which should be taken by them to prevent 
serious damage to their trees, and good results are being accom- 
plished along these fines. 
CONCLUSION. 
The gipsy-moth work of the Bureau of Entomology is well organ- 
ized and each section is accomplishing good results. 
The scouting work and the quarantine work are doing efficient 
ice and preventing the spread of the gipsy moth, but on account 
of the enormous area which is infested it is impossible to cover much 
of the woodland. This has resulted in a gradual spread of the insect. 
It has been possible to restrict this spread very materially toward 
the westward. 
The work of natural enemies, including the parasites, predacious 
enemies, and disease, have helped materially in decreasing the 
amount of infestation, and it seems probable that these influences 
will become more potent factors in the future. 
The importance of bringing forest lands into a growth which is 
unfavorable to the development of the gipsy moth can not be too 
strongly urged, as the work of natural enemies is likely to fluctuate 
from year to year on account of adverse conditions or the decimation 
of the beneficial species by other parasitic forms. Every movement 
toward bringing about more unfavorable forest growth is therefore a 
step in solving the gipsy-moth problem. 
WASHINGTON : GOVERNMENT PRINTING OFFICE : 1915 
