46 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 3 



President Britton: We will now call on Mr. Rogers, who has 

 charge of the gypsy moth field work in the United States Department 

 of Agriculture. 



Mr. Rogers: Since Mr. Headlee spoke about the bomb, I would 

 like to say a few words in regard to it. We have large tracts of wood- 

 land which are inaccessible to spraying machines carrying water. 



Mr. Fiske asked me to show this device in the exhibition room for 

 distributing dry arsenate of lead over the trees while they are wet with 

 dew, or after a shower. We have met with no marked success in its 

 use, and it is shown only as a novelty, hoping that it might interest 

 some of you. 



The government moth work is conducted in cooperation with the 

 officials of the different infested states. We have now over four hun- 

 dred men at work in the field, clearing roadsides of underbrush, de- 

 stroying the eggs of the gypsy moth, and cutting clusters of the 

 brown-tails. 



We have about one hundred men doing scouting work and about 

 thirty in Maine, with a crew of twenty or more in Rhode Island. 



I would like to mention a device which we have used with consid- 

 erable success in spraying, which we have termed a water-tower. It 

 is a long piece of steel tubing hung by a universal joint from the top 

 of a short mast ; the hose from the pump being attached to the lower 

 end. The operator stands on the top of the tank and uses the part of 

 the tube below the mast as a handle for swinging the nozzle about 

 over the trees. The nozzle is about twenty-five feet above the ground, 

 so that we can cover the top of trees one hundred feet high without 

 climbing. 



Mr. Worthley of the state office is making some experiments with a 

 new nozzle, which I think, if explained, would benefit all of us. 



President Britton : We would like to hear from Mr. Worthley be- 

 fore closing this discussion on the gypsy moth work. 



Mr. Worthley : Mr. President, I think this subject has been very 

 fully covered this afternoon, but I would like to mention the fact that 

 the state of Massachusetts is exerting itself to the utmost in its war- 

 fare against the gypsy moth. We have carried on the campaign over a 

 large area of country, and the residential sections which were infested 

 are now in a very good condition. The woodland problem is the most 

 difficult one to handle. The work is being pushed as vigorously as 

 possible. 



Mention has been made of the new nozzle which has been devised 

 for the spraying of trees. This wiU be exhibited before the meeting 

 closes, and a demonstration of its work will be made. By using this 



