668 ANNUAL REPORTS OF DEPARTMENT OF AGRICULTURE. 



Rabies— Page. 



control in predatory animals 34() 



(liasnosis, cases 138 



Ra])l)its— 



domestic, production 354-355 



wild, extermination 350-351 



Radiation, solar, investigations 87-88 



Railroad — 



Administration, cooperation witJi Roads Bureau 492^93 



Association, American, cooperation with Roads Bureau 493 



Range, forage plant studies 253 



Ranges- 

 forest, researcli investigations 252-254 



National Forests, uses and grazing fees 234-238 



reseeding for forage 252-253 



sheep breeding experiments 100 



Rat, carrier of disease 353 



Rat-proofing buildings, importance 353 



Rats — 



cotton, injuries to crops, and control 352 



liouse, control 352-353 



Reclassification committee, cooperation witlx 529 



Recommendations by Secretary Mereditlx 16-17, 19, 30, 31, 45, 50-58, 60 



Recreation — 



l)arks and forests, administration needs 48 



National Forests, permits and receipts 239-241 



Reforestation, work in National F^'orests, 1920, acreage, by States 233 



Refrigeration, fruit, investigations 563 



Regulatory work, recommendation for appointment of Director 60-61 



Reid, Edwy. B., report as Oliief of the Division of Publications 383-404 



Reindeer, industry in Alaska, development 378 



Reports of cliiefs. See under names of Bureaus and Chiefs. 



Research work — 



Chemistry Bureau, need of funds 256, 281 



Experiment station, want of funds 455 



Forest Service 246-254 



Reserves, animal , trespass laws, need 55 



Ribes, blister rust infection 54-57 



Rice — 



acreage and production, 1914-1920 5, 6 



crop, 1920, remarks by Secretary 3 



growing- — 



in Porto Rico 17 



varieties and extension 170-1 71 



Rights of way, cases in National F'orests, court decisions 586, 587 



Rivers — 



flood warning service, work 72-73 



stream flow, relation to forest cover 250 



Road — 



Act, Federal-aid, passage and projects approved 42 



binders, research work 518 



funds, forest, distriliution among States 244 



materials, nonbituminous, investigations 517 



Road-building equipment, distribution of war surplus 510, 515, 528 



Roads — 



administrative work, improved methods 493-494 



building and maintenance, investigations 520 



Bureau — 



librarv, work 440 



report of Chief 491-529 



work and problems, review by Secretary 41-45 



condition, information, to automobilists, work of Weather Bureau 69 



construction difliculties in transportation labor, etc 42-43 



experimental, construction and maintenance 520 



Federal Aid — 



Act, passage and projects approved 42 



location and character 496-499, 501-506 



mileage allotted and built, 1917-1920 42 



progress of work 491-507 



