LETTER OF TRANSMITTAL. 



U. S. Department of Agriculture, 



Bureau of Entomology, 

 WasTiington, D. C, Aprils, 1910. 

 Sir: The only accounts so far published by the Department 

 of the large-scale work which is being carried on under congressional 

 appropriations in the effort to limit the farther spread of the gipsy 

 moth and the brown-tail moth in New England have been brief 

 statements in the annual reports of the Chief of the Bureau of Ento- 

 mology. The work has now reached such a stage that a comprehen- 

 sive account of the work accomplished, the methods of work, and 

 present conditions, is demanded. I therefore have the honor to 

 submit for publication the accompanying manuscript, which includes 

 a report on the field work for preventing the spread of the gipsy moth 

 and the brown-tail moth, and which has been prepared by Messrs. 

 D. M. Rogers and A. F. Burgess, of this Bureau. This report does 

 not include a consideration of the efforts made to import and accli- 

 matize the European and Japanese parasites of the gipsy moth and 

 the brown-tail moth. That matter will be described in another 

 bulletin. I recommend that the accompanying manuscript be pub- 

 lished as Bulletin No. 87 of this Bureau. 

 Respectfully, 



L. O. Howard, 

 Entomologist and Chief of Bureau. 

 Hon. James Wilson, 



Secretary of Agriculture. 



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