646 ]XDEX. 



Biological — -Continued. 



Surve^ — Page. 



Bureau, report of Chief, 1922 331-369 



cooperation with Forest Service and others 333, 336, 338, 343, 344 



economic investigations 332-346 



organization and officials 331-332 



Bird refuges, number, location, and conditions 360-362 



Birds- 

 Australian, importations 367, 368 



counts and banding work 350-351 



distribution and migration 350-352 



food habits, in\estigations 346-349 



foreign, importations 366-368 



migratory — ■ 



investigations 351-352 



nests, etc., collection permits 365-366 



treaty act, administration 362-366 



South American, importations, list 368 



stomachs, exainination 349 



Bituminous road materials, researches 492, 494 



Blackbirds, food habits, and control 356 



Blackleg vaccine — • 



maimfacture, discontiimance 47 



preparation and distribution ...» 1 48 



Blight, chestnut, control by resistant varieties ] 90 



Blister rust, white pine, control work 23 



Blowflies, investigations 320 



Blue stain, yellow pine and gum, control studies 189 



Blueberries, improvement by breeding 182 



Board of Awards, price reductions 44 



Boll weevil, control work, progress 25-26, 172, 317-318, 450 



Bollworm, pink, control work 26, 604-608, 625-626, 628 



Books, number in Library, and loans by other libraries 395, 409 



Borax in ferfilizers, effect on crops, investigations 189, 297 



Bordeaux mixtures, investigations by Insecticide Board 596, 601 



Borer, corn — 



destructiveness and control work 27, 608-609, 625, 627 



European, spread and control 306-308 



Bore/s, forest trees, control work 323, 324 



Boric acid — 



effect on foods, tests 456 



use in canning, investigations 277 



Botulinus— 



anti-hog cholera serum 150-152 



antitoxin experiments 145 



in canned goods investigations 277, 279, 283 



Botulism, studies 145 



Boys' clubs, work, summary and details 35, 440, 447-448, 632 



Brahman cattle, production in Texas, and uses 106 



Bran, protein investigations 255 



Brazil, International Centennial Exposition, exhibits 631, 632 



Breeding — ■ 



cattle, experiments and projects , 106, 1 24-125 



dairy cattle, experiments 124-125 



hogs, experiments 106-107 



horses, progress of work 110-111 



poultry, experiments 112 



sheep, experiments 108, 109 



Broadcasting stations, licensed, limitations 74 



Bromide, enlargement, work in Illustrations Section 389 



Bi-owntail moth — 



control work, 1922 305, .306 



quarantine order 625 



Buckley, John S., Chief of Pathological Division 144 



Buckwheat, statistics, acreage and production 53, 56 



Building — 



code. National, committee, work _ 241 



Library, for permanent quarters 405-406 



program for Department 39-41 



