320 



STATE AID 



The Bureau of Soils conducts chemical and physical investiga- 

 tions of soils, seeks new sources of natural fertilizers, particularly 

 potash; and makes soil surveys in the different States. 



The Bureau of Entomology is chiefly engaged in combating 

 insect pests, and cooperates in many ways with the Bureau of 

 Plant Industry. Campaigns are waged against the gipsy and 

 brown-tail moth, the boll-weevil, Hessian fly. and against various 

 insect carriers of plant diseases. 



FIG. 60. Results of poisoning operation by assistants of the Biological Survey in Arizona. 

 On 320 acres 1641 prairie dogs were collected after one night's operation. Total cost of the 

 extermination, including labor, $9.79. (U. S. D. A.) 



The Bureau of Biological Survey has charge of the enforcement 

 of the Lacey Game Act, and the administration of the seventy 

 Federal bird reserves and five large-game preserves. Protection 

 is given to wild ducks, and other migratory birds, and to big game. 

 It also experiments with destruction of animal pests (Fig. 60). 



The States Relation Service is the bureau in charge of the 

 supervision and control of federal funds expended through the 

 State Agricultural Colleges for the purposes of Research and Ex- 

 tension. Under the four acts mentioned below (1862, 1887, 1906, 

 1914) this bureau has a very important and far-reaching service 

 to perform, owing to the centralizing of so much power over State 

 education in a few hands at Washington (Fig. 61). 



