542 INDEX. 



Corn — Continued. Page. 



rootworm, investigations 248 



weevils, investigations 249 



jield 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 testii^ 162-163 



Egyptian, growing in California 152-153 



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

 Futures Act- 

 amendments and administration 428, 453^55 



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 445^46 



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, 37&-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 



Bureau, 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, investigations 253 



Curing meats, investigations 127-1 28 



Cyanamid, use for fertilizer purposes 241 



Cyanide, soda, insect control 252, 254 



Cymene, use in photography 231 



Cystine, addition to N&yy beans to increase nutritive value 220 



