BUREAU OF ENTOMOLOGY. 547 



With forest insects, the investigations of the past fiscal year will 

 be continued. The demonstration work outlined in this report will 

 be carried on as vigorously as the cooperation of the Forest Service 

 and of private owners will permit. 



With deciduous fruit insects, the investigations already outlined 

 will be continued to the close of the season, at which time some of 

 them will be concluded. It ^\'ill be desirable to continue the work 

 with the pear thrips, although the scope of the operations may be 

 lessened. Further codling moth studies are desirable, especially in 

 the Southeast, as in Georgia, which is a coming apple State, and in 

 the Southwest, as in New ]\Iexico and California. Plum curculio 

 demonstration work will probably be continued and enlarged. A 

 study of fruit-insect parasites is to be begun. The establishment of 

 a laboratory in the New England States for the study of the apple 

 maggot and other fruit pests, which was found impracticable in the 

 spring of 1910, it is hoped may be effected in the spring of 1911. 



With cereal and forage-plant insect investigations there will be no 

 great expansion of the investigations, but as much attention as pos- 

 sible will be paid to the Hemileuca caterpillar damaging stock ranges 

 in New Mexico, and to the alfalfa weevil in Utah. 



No new work, except in a small way, will be carried on in insects 

 affecting vegetable crops. 



With insects affecting citrus fruits, as already pointed out, the in- 

 vestigation with hydrocyanic-acid gas has been completed ; the work 

 uponthe orange thrips will be continued, and the work on the wdiite 

 fly will be carried on in about the same way as during the past fiscal 

 year. Congress has made an appropriation of $5,000 for the in- 

 vestigation in this and foreign countries to discover natural enemies 

 of the Avhite fly, and, in consequence, an expert agent has been sent 

 to oriental regions, where there is reason to believe that the white fly 

 has its original home, in a search for these natural enemies. This 

 mission will probably occupy the greater part of the fiscal year. 



Under the work on insects in their direct relation to the health of 

 man and domestic animals, a new series of investigations has been 

 begun on house fly conditions in relation to the agency of this pest in 

 the spread of typhoid fever and other intestinal diseases. Experi- 

 mental work with mosquitoes will be carried on in a small way. The 

 investigations of the southern cattle tick are being continued. Much 

 important work on the spotted fever tick is under way, having been 

 begun shortly before the close of the last fiscal year. The presence of 

 spotted fever— which is transmitted in nature only by the tick — inter- 

 feres with the develoi)ment of large areas of land in the Northwest. 

 The camp laboratory in the Bitter Koot Valley will be continued 

 during a portion of the season, and efforts will be made toward ob- 

 taining exact information regarding the distribution of the dangerous 

 ticks throughout the territory in which spotted fever occurs. It is 

 hoped that the information gained Avill enable the residents of the 

 Bitter Root Valley to undertake a campaign of eradication. 



The work on insects injurious to stored products will be carried 

 on along the same lines, the only innovation l)oing the sending of an 

 expert assistant to Smyrna to study the conditions under \yhich 

 Smyrna figs become wormy, in the effort to bring about conditions 

 which will enable importers to bring in and sell wormless figs, meet- 

 ing the provisions of the pure food law. 



