CONTENTS. 



Introduction „ 



Importance of the gipsy moth as an insect pest in this country 9 



State work against the gipsy moth in Massachusetts, 1890-1900 11 



Record of the gipsy moth in its native home H 



Life history of the gipsy moth ;^2 



The eggs \[\ ^2 



The larvae to 



The pupae j^g 



The adults 2^g 



Methods employed in work against the gipsy moth 16 



Scouting Ig 



Spraying 17 



Burlapping 17 



Sticky bands Ig 



Cutting and burning 18 



Pruning. 19 



Treating egg clusters _ 19 



Discovery of the brown-tail moth in America 20 



European history of the brown-tail moth 21 



Life history of the brown-tail moth 21 



The eggs 21 



The larvae 21 



The pupae 22 



The adults 23 



Poisoning effect of brown-tail hairs 24 



Natural enemies of the gipsy and brown- tail moths native to America 26 



Progress of the state work in Massachusetts, 1890-1900 27 



Discontinuance of the state work in Massachusetts 28 



Conditions in the infested territory at the close of the state work 29 



Funds expended by the State during the progress of the work 29 



Results of discontinuance of the work 30 



State work resumed in Massachusetts 31 



Beginning of work by the National Government 37 



Work by the State of Massachusetts 47 



Work in the State of Maine 50 



Work in the State of New Hampshire 53 



Work in the State of Rhode Island 54 



Work in the State of Connecticut 56 



Inspection of lumber and forest products 51 



Danger of introducing the gipsy moth and brown-tail moth from foreign coun- 

 tries 60 



Experimental work in the control of the gipsy and brown-tail moths 62 



5 



