CONTE]^TS. 5 



Report of the Chemist — Continued. Page. 



Studies of foods and food materials 439 



Miscellaneous investigations 452 



Special research work 459 



Publications and printing 466 



Clerical and business operations 467 



The principal projects planned for the fiscal year 1911-12 467 



Report of the Chief of the Bureau of Soils 475 



Progress of the soil survey 475 



Cooperation 478 



Soil resources of the country 478 



The scope of application of the soil surveys 478 



Physical and chemical laboratory investigations 481 



Soil fertility investigations 483 



Soil-water investigations, 1910-11 486 



Need of larger appropriation for the Bureau of Soils 487 



Division of soil surveys 488 



Division of soil chemistry and physics 490 



Division of soil fertility 492 



Division of soil water and erosion 493 



Lines of work for which specific appropriations are desired 493 



Report of the Entomologist 495 



Work of the year 495 



Proposed work for the fiscal year 1912 530 



Plans for work recommended for the year ending June 30, 1913 532 



Report of the Chief of the Bureau of Biological Survey 533 



Work of the Biological Survey 533 



Increasing the number of native birds 533 



Woodpeckers 534 



Birds of Arkansas 535 



Food of wild waterfowl 535 



Epidemic of wild ducks at Great Salt Lake 536 



Alfalfa weevil 536 



Ground squirrels 536 



Rodents in relation to reforestation 537 



Prairie dogs 537 



Moles 537 



Fur-bearing animals 538 



Cooperative work in relation to spotted fever 538 



Crawfish in relation to agriculture 539 



Biological investigations 539 



Importations 541 



Game protection 542 



Bird reservations 542 



National bison range 545 



Alaska 545 



Elk in Wyoming 545 



Information concerning game 546 



Cooperative work in game protection 546 



Plumage 547 



Interstate commerce in game 547 



Outline of work for 1912 548 



Econo'mic ornithology and mammalogy 518 



Geographic distribution 548 



Game protection 549 



