542 INDEX. 



Corn Continued. Page. 



rootworm, investigations 248 



weevils, investigations 249 



yield per acre, increase since 1908 12, 15 



Cost accounting, investigations, by Farm Management Office 466 



Cotton 



*'bolly," testing for waste and strength 446 



breeding work, 1919, and variety testing 162-163 



Egyptian, growing in California 152-153 



estmiates, by Crop Estimates Bureau and Census Bureau, comparison. . . 330-331 

 Futures Act 



amendments and administration 428, 453-455 



enforcement by Solicitor, 1919 494_495 



results 43 



handling and marketing 443-444 



importations, regulations, and quarantine, restrictions 522-524 



insects, injurious, control 267-268 



pink bollworm control, situation in Texas, quarantine, etc . 505-510, 511-512, 531 



standards, investigation and determination 445, 455 



statistics, acreage production and exports, 1910-1919 6, 7, 9 



testing, manufacturing and spinning qualities 445-446 



warehousing, investigations 445 



yield per acre, increase since 1908 14, 15 



Cottonseed 



feeding to work horses and mules, experiments 87 



marketing, and its products 444 



meal, food use, investigations 228 



Cottontails, control 280 



County 

 agents 



war work 377-279 



work in South, North, and West 367-372, 376-381 



organization, North and West 377 



Cover crops for vineyards 141 



Cow, testing association, advantages and records 91-92 



Cranberries, insects injurious, investigations 253 



Creameries, improvement work 94-95 



Cresol solutions, testing methods, study 127 



Crop 



economics, studies, by Farm Management Office 465 



Estimates 



Bureau, cooperation with States 328-329 



Bureau, crop and live stock reporting 29-31 



Bm-eau, report of Chief, 1919 325-335 



Library, work, 1919 347,349 



reporters, voluntary, numbers and subjects 326 



reporting 



Bureau of Crop Estimates, review of work 29-31 



service improvement, demands 331-335 



Crops 



acreage and production, 1914-1919, and yields, 1919 6-7 



irrigated, utilization 160-161 



new 



estimates, demand for 333 



introduction and protection 157-159 



nutrition and malnutrition, studies 165-166, 167 



protection, work of Weather Bureau, 1919 66, 67, 70 



utilization 159-161 



yield per acre, increase 4, 10-16 



yields, increase in foreign countries 16-18 



Cucumber diseases, control ". 173 



Curculio, walnut, invest^tions 253 



Curing meats, investigations 127-128 



Cyanamid, use for fertilizer purposes 241 



Cyanide, soda, insect control 252, 254 



Cy mene, use in photography 231 



Cystine, addition to Navy beans to increase nutritive value 220 



