650 ANNUAL REPORTS OF DEPARTMENT OF AGRICULTURE. 



Cropa — Continued. Page. 



Southt'rn, inRccf invoBtigatiooB 329-:ir?4 



e]H'cial. utilization 191-11)3 



Crows, control in orchards 359 



Cururl>it insects, investigations 320 



Curculio — 



plum, control in ]>each orchards 314 



walnut, invostigations 317 



Currants, eradication for pine blister rust control 213-215 



Cyananiid^ — 



chemical changes, studies 197 



calcium . ]iroduction, source of fertilizers, etc 300 



jiroparation and uses 295. 29fi. 301 



Cystine, need in nutrition studies 269 



Dairy — 



cattle, breeding experiments 118, 157 



Cows — 



diseases, control work 109 



feeding experiments 117 



inbreeding, experiments, results 116 



Division, work, 1920, report 106-118 



engineering, preparation of plans, etc 117-118 



experiments, Belt8\ille farm 116-177 



extension. South and East 93, 106-111 



herds, irrfprovement 35 



products — 



investigations by Chemistry Bureau 271 



marketing and market news, 1920 540-541 



utilization and improvement 109-111 



research, laboratories 114-116 



Show, National, exhibit from Department 394 



work, funds recommended 94 



Dasheen , acreage and use , increase 185 



Dates, culture, ripening, varieties, etc 179-181 



Dauhentonia longifolia investigations 142 



Daylight — 



intensity measurements 88 



plant needs, investigations 161 



Dehydration, fruits and vegetables, investigations 277-278 



Demonstrations — 



bee culture 339-340 



county agents, results 468-469, 477-478 



Hawaii agriculture 461 



milk utilization, results 110-110 



Dipping, cattle, in Porto Rico 462 



Dips, cattle, investigations 146 



Disbursements — 



1839-1920, statement 380-381 



Division, report of Chief, 1920 379-381 



Diseases — 

 animal — 



causes of meat condemnations 119-122 



field inspection work 122-130 



research work 136-142 



bee, investigations 341 



dairy cows, control work 109 



fruit, investigations 217-219 



fungous, use in moth control 328 



live-stock, control work 30-31 



plant — 



control work 27-28 



investigations 198-220 



studies in Hawaii 460 



poultry, investigations 140 



