504 INDEX. 



Chemistry — 



Bureau — Page. 



collaboration with other Departments, etc 223-224 



cooperation with State and municipal officials 207 



cooperation with War Department, etc 14 



research work, 1918 201, 217-223 



research papers, in course of preparation 222 



Chestnut blight, resistant species, possibilities 155 



Chickens, gapeworm, investigations 125 



Cholera, hog — 



control, and investigations 73-74, 128-130, 137-138, 139 



control work, 1918 16-17 



spread methods 119-120 



virus and serum preparation, control work 129 



Cider, fermentation, studies , 219 



Citrus — ■ 



canker — . 



eradication, progress 155 



eradication work, 1918 29-30 



insect pests, control 245-247, 249 



City- 



market news service 479-480 



marketing and distribution of foodstuffs, studies 458-459 



Climatology, work of Weather Bureau, 1918 63-^4 



Clubs, boys' and girls' — 



enrolfment and work, 1918 78, 80, 85 



organization, membei-ship, and work 341, 355-357, 364-366 



Codling moth, investigations and control 233, 235 



Cold storage, reports 481 



Color investigations, Chemistry Bureau, and patents secured 214-215 



Colors, food, work of Chemistry Bureau, 1918 206 



Conservation — 

 food — 



necessity of continuation 9 



publications, 1918 291-293 



foodstuffs, work of chemistry Bureau 208-209 



Container, standard, enforcement of law, Markets Bureau 486-487 



Containers, waterproof, etc. , studies. Chemistry Bureau 216 



Cooperation — 



official agencies, emergency work 10-12 



Soils Bureau, with States and with other offices 225, 228-229 



Cooperative — 



extension service, work and importance 12-13, 53 



loan associations, benefits to farmers 44-45 



purchasing and marketing organizations, investigations 456 



Copra, crushing industry, study of value of products 218 



Corn — 



acreage and production, 1918, comparison with previous years 5, 7 



belt, farm management problems, investigation 498 



borer, European, introduction, habits, and control 237-238, 248 



breeding work, 1918 139-140 



diseases, study 153 



growing, seed -germination studies 146-147 



sweet, resistant to the corn earworm 139 



Cornea, ulceration, cattle, control 131 



Cosmopolites sordidus, forage poison 116 



Cotton — 



Acala, origin and description 138 



acreage and production, 1914-1918 7 



belt, farm management problems, investigations 498 



breeding work, 1918 136-139 



districts, live stocky experiments and demonstrations 131-133 



fiber testing, effect of mercerizing, etc 470 



Futures Act- 

 administration, Markets Bureau, 1918 482-484 



assistance of Solicitor 419 



glands, oils, studies 217 



growing, community work for protection of seed supply 146 



