MAP OF NEW ENGLAND, SHOWING AREAS INFESTED BY THE BROWN-TAIL MOTH 



This map shows the progressive spread of the brown-tail moth. The prevailing winds 

 during the summer flight in July have carried the insect eastward and northward much faster 

 than southward and westward. This is the insect which is now being introduced on im- 

 ported nursery stock, and if it gains a foothold in a few interior points its means of rapid 

 spread would enable it to quickly infest the whole country. 



cherry, plum, and quince stock. It is 

 held by importing nurserymen that par- 

 ticularly the cherry, plum, and quince 

 stock is better grown abroad than at 

 home. Nevertheless, until recently all 

 such stock was home-grown, and proba- 

 bly the bulk of the apple-seedling stock 



is still home-grown. Admitting the ne- 

 cessity of the importation of some seed- 

 ling stock, it is all the more desirable to 

 have means to thoroughly inspect, and, if 

 necessary, quarantine such stock. 



The first concerted effort to obtain a 

 national quarantine and inspection law; 



