FEDERAL HORTICULTURAL BOARD. 359 



REGULATORY INVESTIGATIONS. 



FOREIGN INVESTIGATIONS. 



The exigency created by the discovery of hvin^ larvae of the pink 

 bollworm in seeds of cotton contained in bales of imported Egyptian 

 cotton, referred to in preceding pages, made it essential for this board 

 to have additional information in regard to the hfe history of the pink 

 bollworm and its damage to cotton and other plants. Early in 

 May, 1915, an entomological assistant of the Bureau of Entomology 

 was commissioned to go to the islands of Oahu and Hawaii to secure 

 first-hand information on these points. Information furnished by 

 him relative to the abihty of the larva to easily penetrate closely 

 woven cloth has already resulted in amending the Regulations Gov- 

 erning the Importation of Cotton Lint into the United States by ehm- 

 inating the requirement that broken bales be patched at port of 

 entry. 



A number of permits were issued in the earl;^ summer of 1915 for 

 the importation of potatoes from British Columbia, as the Department 

 had information to the effect that the western coast of Canada 

 was free from powdery scab. Notwithstanding this information, 

 several suspicious loolong imported potatoes, forwarded to Wash- 

 ington by our inspector at Seattle, proved to be infected with this 

 disease. A scientific assistant of the Bureau of Plant Industry, then 

 stationed at Jerome, Idaho, was authorized to proceed to British 

 Columbia to determine, if possible, the source of the diseased potatoes. 

 He found powdery scab at a number of places in British Cfolumbia, 

 and as a consequence all permits to import potatoes were promptly 

 revoked. 



DOMESTIC INVESTIGATIONS. 



The investigations necessary to the determination of quarantine 

 lines and as a basis for proper regulatory action in connection with 

 domestic quarantines have been conducted in cooperation with the 

 Bureau of Plant Industry in relation to the potato quarantine, and 

 in cooperation with the Bureau of Entomology in relation to the moth 

 quarantine in New England. No special investigations were neces- 

 sary in relation to any of the other domestic quarantines. 



LIST OP PLANTS AND PLANT PRODUCTS COVERED BY QUARANTINE. 



The following is a hst of the plants and plant products now under 

 quarantine in accordance with the various notices of quarantine 

 issued up to June 30, 1915: 



Irish potatoes from Newfoundland, the islands of St. Pierre and 

 Miquelon, England, Scotland, Wales, Ireland, and continental 

 Europe, except Denmark and part of the Netherlands. The quar- 

 antine is still in force against the Provinces of Drenthe and Gronin- 

 gen in the Netherlands. There are no restrictions on the entry of 

 foreign potatoes into the island of Porto Rico. 



Irish potatoes from the States of Maine and New York, except under 

 rules and regulations prescribed.* 



> Discontinued Sept. 1, 1915. 



