382 ANNUAL REPORTS OF DEPARTMENT OF AGRICULTURE. 



carefully inspected' on several occasions to make certain that no 

 scattered seeds remained. While every possible precaution was 

 taken to prevent the introduction of this most serious cotton pest, a 

 careful watch will be kept on the cotton fields in the vicinity of 

 Norfolk during the season. 1 The prompt destruction of the seed after 

 its presence in our waters was known, and the fact that the great 

 majority of the insects had emerged during the long cruise of the 

 Appam through the Tropics, very greatly reduced the danger. 



REGULATORY INVESTIGATIONS. 



The investigations necessitated in connection with our domestic 

 quarantines were confined to a survey for the powdery scab disease 

 of potatoes in the Gulf and Southern Atlantic States and in the States 

 of Wisconsin, Minnesota, Washington, and Oregon, conducted by 

 employees of the board, resulting in the lifting of the foreign and 

 domestic quarantines on account of this disease; the completion of 

 the investigation of the pink bollworm in Hawaii commenced last 

 year by one of the entomological assistants of the Bureau of Ento- 

 mology, as a result of which the cotton regulations were modified, 

 and the annual scouting to determine the spread of the gypsy moth 

 and the brown-tail moth in the New England States, leading to the 

 quarantining of a number of additional towns on account of the gypsy 

 moth and the elimination from the quarantine of a few towns included 

 last year and which were found to be free this year. 



LIST OF PLANTS AND PLANT PRODUCTS COVERED BY QUARANTINE. 



The following is a complete list of the plants and plant products 

 now under quarantine in accordance with the various notices of 

 quarantine issued up to June 30, 1916: 



FOREIGN. 



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

 Miquelon, England, Scotland, Wales, Ireland, Germany, and Austria- 

 Hungary, on account of the disease known as potato wart. There are 

 no restrictions on the entry of foreign potatoes into the island of 

 Porto Rico. 



Cotton seed (including seed cotton) of all species and varieties and 

 cottonseed hulls from all foreign localities and countries except the 

 States of Nuevo Leon, Tamaulipas, Coahuila, Durango, Chihuahua, 

 and Lower California, Mexico, on account of the pink bollworm. 

 Cotton seed (including seed cotton) of all species and varieties from 

 the Mexican States mentioned may be imported under permit and 

 bond for manufacturing purposes only. No restriction is placed on 

 the use of cottonseed hulls imported from said States or which may 

 be obtained from cotton seed imported from said States. 



Seeds of avocado or alligator pear from Mexico and the countries 

 of Central America, on account of the avocado weevil. 



> Inspection conducted by the Bureau of Entomology of cotton fields within a radius of 20 or 25 miles of 

 Norfolk in Pepl ember, 1916, failed to show any signs of the pink bollworm. 



