642 ANNUAL REPORTS OF DEPARTMENT OF AGRICULTURE. 



Alaska — Continuod. Page. 



fur l)i>arers, iiivt'stigations 37g 



fur-l)oariiip; aiiimalH, care, transfer of work to Agricultural Department 578 



live stock lireeding 457-458 



pulpwood supplies, need of careful development 230, 231 



reindeer, investigations ' 378 



Alfalfa- 

 destruction by rodents 348, 349, 350 



growii'g investigations '. . ' igg 



weevil control, cost and saving 310-311 



Alkali, study in irrigation and drainage investigations 524, 526 



Alnioiids. destruction by crows 359 



Alpe'ia-Thunder-Bay- Middle Island telegraph station service 76 



Ai-SBKKO. ('. L., report as Chemist 255-284 



Alum, injury to skins by sotting hairs 280 



American I'niversity. work on nitrogen fixation with Department apparatus. . 295 



Ammonia, recoverv processes 40, 295> 300 



Ammo iium phosphate, production from cyanamid .300 



Analy.sis, methods and apparatus 283 



Anastatus bifascialus, parasite of gipsy moth 327 



.\nimal — 



diseases, inspection, field work 128-130 



IIusl)andrv Division, work, report 95-106 



Industry Bureau — 



library work 44O-44I 



report of Chief 89-1 57 



special activities, and recommendations 89-95 



parasites. See Fleas; Lice; Mites; Ticks. 



products, importations, certificates requirements 127-128 



quarantine laws, work of Solicitor 584, 597-598 



Animals — 



domestic, insects injurious 334-336 



export, inspection 128 



fur-bearing protection and propagation 354-357 



imported for breeding, certificates issued 106 



imported, inspection and quarantine 126-127 



meat, inspection, ante-mortem and post-mortem 118-121 



predatory, injuries, and control work 30, 345-347 



quarantine work of Department 120-128 



saving from drought 95 



wild, autopsies, and diseases found 141 



See also Live stock. 



Anise seed, adulteration 266 



Ants, white, injuries to buildings, examples, and prevention 321-322, 324 



Apanteles spp. , parasites beneficial in moth control 328 



Appalachian Forests, purchase, need of funds 226 



Apples — 



crop of 1920, remarks by Secretary' 3 



disease investigations 217, 219 



flavor, studies 273 



insect investigations 314-315 



losses from freezing iil transit 535 



Appropriation, printing and binding 384 



Appropriations — 



1920, and 1839-1920 379-381 



extension work and experiment stations, 1920 445, 456 



Federal and State, for experiment station work 454 



Arizona — 



date growing 180 



Glendale station, poultry breeding experiments 104 



Arkansas — 



beef cattle production experiments 97 



Big Lake Bird Reservation, condition 370 



Arlington Farm — 



laboratory for nitrogen fixation work 295 



phosphoric acid investigations 297 



