976 ANNUAL REPORTS OF DEPARTMENT OF AGRICULTURE. 



Concltaspis amiraa, uote 522 



Concrete, oil-mixed cement, nature and value 15] 



discovery and practical use 715-716,739-741 



preparation, directions 740 



use on roads, 1911 720-722. 741 



Congressional Record. rcadin<Tand distribution, transfer of work 623 



seed distribution 78-79, 339-341 



Connecticut, brown-tail moth invasion Ill 



field work at;ainst mollis 497 



Valley, tobacco investigations 290 



Constitution, United States, decisions of Supreme Court in National Forest 



cases 795-796 



Constitutionality, Food and Druj^s Act, decision 767-768 



"Consumption cures" investigations 439 



Contagious diseases, animal, control by Department, work of 1911 224-226 



Contract supplies, examination by Chemistry Bureau 83-84.457-459 



Contracts, agreements, etc., jireparation by Solicitor 798-800 



1< orest Service, work of Solicitor 784 



laboratory, proposed work 473 



Cooperative demonstration work, farmers', review 310-315 



Copra industry, danger from coconut beetle 144 



Tutuila, danger from coconut beetle 704 



Corn, acclimatization and adaptation 270, 274-275 



adaptability, experiments 294 



belt, work 294 



breeders, cooperation 293 



breeding, plans for work 294-295 



clubs, boys', organization, enrollment and methods 76-77 



crop, increased production in Southern States, remarks 311-312 



of 1911, remarks by Secretary 15-16, 20, 21 



cross breeding, note 293 



exports, note 24 



growing experiments, Guam 703 



improvement, work 294 



hybridization, importance, etc 274, 275 



increased yield on demonstration farm, etc 310 



insects, investigations, note 517 



investigations, progress G9-70, 292, 293 



leaf aphis, investigations 516 



oil cake, exports, note 24 



production cost, various States 642 



purchasing power per acre, 1899, 1909, and 1910 654-056 



self-pollination, effect on yield 274 



shrinkage, investigations 288 



spoiled, relation to pellagra, studies 62 



toxic properties, investigations 278 



See also Maize. 



Cornfield, average size, various sections 642 



Cornstalk extract, feeding experiments with dairy cattle in Virginia 212 



use as cattle feed , experiments 68, 212 



Cornstalks, by-products, use as cattle feed, value, etc 68, 212 



food extract, value, feeding tests, etc ; 283, 284 



use in paper making, experiments 68 



Corn-testing clubs, organization, remarks 293 



Correspondents, Statistics Bureau, status, and work 040, 641, 645-647 



Cotton acclimatization and adaptation 270-274 



boll weevil. See Boll weevil, cotton. 



color characters, commercial value, note 273, 274 



standardization, work 283 



crop of 1911, remarks by Secretary 14, 16, 20-21, 151 



culture, Egyptian methods, advantages 274 



disease-resistant varieties, studies 57 



diseases, control 57, 266 



Egyptian^ American grown, comparison with imported type 63 



experiment farm at Yuma, Cal., work 299 



in Southwest, experiments 303 



successful growing 11 



