854 ANNUAL EEPORTS OF DEPARTMENT OF AGKICULTUEE. 



the United States Department of Agriculture, calling attention to the 

 provisions of the plant quarantine act, Quarantine No. 13, and the 

 regulations prescribed therein. 



Powdery scab of potato. — Quarantine No. 18, promulgated 

 November 14, 1914, regulates the movement of potatoes irom Chnton 

 and Franklin Counties, N. Y., on account of the occurrence in these 

 counties of the dangerous potato disease known as powdery scab 

 {Syongos'pora suhterranea) . This quarantine order supplements Notice 

 of Quarantine No. 14, issued April 25, 1914, designed to prevent the 

 further distribution in the United States of powdery scab from 

 certain portions of the State of Maine. The regulations governing 

 the interstate movement of potatoes from areas quarantined for 

 powdery scab, issued under the latter quarantine order, apply also 

 to the area quarantined in the State of New York. These quaran- 

 tines are administered under a special appropriation, providmg for 

 cooperation on the part of the States concerned. 



Gipsy moth and brown-tail moth quarantine. — Quarantine No. 

 22, promulgated May 20, 1915, was originally issued November 5, 

 1912, as Quarantine No. 4, and has been revised and amended annually 

 to include the new territory invaded by the gipsy moth and the 

 brown-tail moth. This quarantine describes the districts in New 

 England infested by the two moths named, and prohibits the move- 

 ment in interstate commerce of plants and plant products except in 

 accordance with the regulations prescribed therem. The spread of 

 the brown-taU moth during the year was so sHght that it was found 

 unnecessary to extend the quarantine line on account of this insect. 

 The gipsy moth, on the contrary, extended its range considerably, its 

 principal spread, fortunately, being northward and eastward. 



Hitherto the interstate shjpment of Christmas trees and Christmas 

 greens from the area infested with the gipsy moth to points outside 

 the quarantined area was prohibited, owing to the extreme difficulty 

 of making a thorough inspection of products of this character and the 

 fact that an abundant supply was available outside of the gipsy- 

 moth territory. Now that the gipsy-moth quarantine line has been 

 considerably extended, and at the earnest and insistent request of 

 Christmas-tree merchants and certain other interests, it was decided 

 to give the shipment of such products a trial next season, and the 

 regulations under the above quarantine order have been amended 

 to provide for the inspection and certification for shipment of Christ- 

 mas trees and greens. 



As in former years, the cost of administering this quarantine was 

 paid out of the special appropriation for preventing spread of moths, 

 granted to the Bureau oi Entomology. 



Hawaiian cotton. — Quarantine No. 23, promulgated June 11, 

 1915, forbids the movement from Hawaii into or through any other 

 State, Territory, or District of the United States of raw or unmanu- 

 factured cotton lint except ui accordance with the regulations pre- 

 scribed therein, with the object of preventing the introduction into 

 the continental United States of the pink bollworm (Gelechia gossy- 

 pieUa) . 



