EEPORT OF THE SECRETARY. 149 



these methods of control has been demonstrated many times. Ex- 

 tensive depredations in Colorado, South Dakota, Montana, Oregon, 

 and California by one of these beetles have been successfully con- 

 trolled in localities where cooperative demonstration work has been 

 carried on at a cost conforming to profitable business methods. 



In 1910 and 1911 an outbreak of the southern pine beetle, which 

 20 years before had devastated the pine forests of West Virginia and 

 Virginia, threatened a like fate to the pine timber of the South 

 Atlantic and Gulf States, but practical demonstrations by represen- 

 tatives of the bureau and the adoption by the owners of the timber 

 of the methods recommended resulted in the cutting of millions of 

 cords of wood from the infested trees, which was burned for fuel, 

 thus destroying the broods of the beetles in the bark. This has con- 

 tributed to the almost complete control of the beetle and to the sav- 

 ing of one of the principal natural resources of the South. 



The officials of Federal, State, municipal, and private reservations, 

 as well as private owners of forest and wood lots, are beginning to 

 avail themselves of this information, so that, as a direct result of the 

 investigations of the department, these beetles will be eliminated as 

 an important factor in forest destruction. 



DEINIONSTRATION WORK. 



Demonstration work, such as is mentioned in the previous para- 

 graph, has come to be an important function of the bureau, and such 

 work has been carried on against the codling moth in different parts 

 of the country, against the pear thrips in California, against the 

 grape rootworm in Pennsylvania, against the cotton boll weevil in 

 Texas, against the cattle tick in Texas, against the plum curculio 

 in Georgia, and against other insects in other parts of the country. 

 There seems to be a great difference between the results of telling 

 people how to do things and showing them how to do them. 



COOPERATION WITH OTHER AGENCIES. 



In the course of the work there has been much cooperation with 

 State experiment stations and with other organizations. For exam- 

 ple, the bureau has cooperated with Massachusetts in the work on 

 the gipsy moth parasites, in the general moth work, and in the 

 inspection work; with Montana on the spotted fever, with Louisiana 

 on the Argentine ant, with Texas on cotton insects other than the 

 boll weevil, with California on the subject of scale parasites, with 

 Tennessee on tobacco insects, with South Carolina on the red spider 

 and other cotton insects, Avith Indiana and Kansas on forage-crop 

 insects, with Utah on the alfalfa weevil, with Hawaii on the Medi- 

 terranean fruit-fly, with Wisconsin on cranberry insects, and Avith 

 many others. 



