1918] 



INDEX OP SUBJECTS. 



943 



Creosote, penetration of hardwoods Page, 

 by, U.S.D.A 892 



Cresol preservatives — 



determination in serums 316 



preparation 378 



Cresols, commercial, toxicity 283 



Cricket, dark brown, injurious to 



plants, P.R 761 



Crimson clover, liming experiments- 21 



Crioceris aspara^L (See Asparagus 

 beetle.) 



Gronartium — 



cereirum on Norway pine 854 



cotnptonice, notes 455 



rihicola, diagnosis, U.S.D.A 356 



ribicola, dissemination by gipsy 



moth larvae, U.S.D.A 860 



ribicola, inoculations on Ribes 151 



riMcola, notes 254, 355 



spp., inoculation experiments 253 



spp., pycnial stages 253 



spp., spore germination 225 



Crop — 



production in Saskatchewan 594 



production in Switzerland in 



1916 91 



production, relation to weather, 



U.S.D.A 208 



reports, U.S.D.A 91, 



294, 393, 596, 695, 793 

 rotations. (See Rotation.) 

 yield, analysis 338 



Cropping systems — 



climatic control 414 



for Middle Atlantic coastal 



plain, U.S.D.A 816 



for Washington, Oregon, and 



Idaho, U.S.D.A 824 



Crops — 



cost of production, determina- 

 tion 89 



effect on nitrogen content of 



soils, Tenn 213 



food value per acre, U.S.D.A 292 



loss in weight after harvesting- 635 

 toxic effects of copper on, Ariz_ 28 



Crossties — 



identification of wood, U.S.D.A- 645 

 Industry in Canada 147 



Crotalaria — 



juncea, nodule formation 528 



ttriata as a green manure 220 



usaramoensia as a green manure 637 



Croton-bugs, destruction 558 



Crown gall — 



chemically induced 648 



studies 752 



studies, Tex 852 



Crows, economic status, U.S.D.A 856 



Crude — 



fiber. (See Cellulose.) 

 petroleum. (See Petroleum.) 



Oryptomeria japonioa, fertilizer ex- 

 periments 624 



Orvptorhynohus lapathi, notes 155, 358 



Cuban Experiment Station, notes 500 



Cucumber — Page. 



beetle, spotted, remedies 864 



diseases in Michigan 545 



downy mildew, studies. Mass 249 



first generation crosses. Conn. 



State 241 



scab, studies 449 



skins, analyses __»_ 626 



wild, seeds of 410 



Cucurbits, parthenogenesis in 331 



Culfcidse. (See Mosquitoes.) 



Cultivation, mechanical. In France. 790 



Culture — 



media for water examination 591 



media. Improvement 710 



media, tests 684 



solutions, studies 730 



Culverts, concrete highway, plans.- 189 



Cumbu, culture experiments 433 



Cuprammonium washes, studies, 



N.H 255 



Currant — 



borer in Tasmania 261 



fruit fly, studies. Me 466 



leaf spot, studies, Can 546 



root rot, studies 650 



Currants — 



black, abnormal blossoms 552 



black, " reversion " of 650 



culture and marketing, Ind 844 



cultiire in California 346 



culture in western Washington, 



Wash 298 



fertilizer experiments 540 



insects affecting, U.S.DA 843 



resistance to pine blister rust 151 



sprayed, arsenic on, N.H 55 



Cutworms — 



control In greenhouses, Ohio 762 



life history and remedies, 



U.S.D.A 54 



Cyamopsis peoralioides, analyses 572 



Cyanamid — 



as a source of nitrogen. Pa 220 



preparation 711 



Cyanld, effect on oxidation In arsen- 

 ical dips 585 



Cyanuric acid — 



distribution In soils 202 



identity with " tetracarbonl- 



mid " 202 



Cyclocephala villoaa, life history 863 



Cylas — 



formicariu8, notes 467, 564 



formicariua, notes, Ala.College- 864 

 spp. atacklng sweet potatoes, 



U.S.D.A 864 



Cylindrocladium acoparium, studies. 854 



Cylindroaporium padi, notes. Can 546 



Cyllene robiniw, notes 459 



Cymatodera cethiopa, notes 61 



Cynlpoidea, type species of _-— 63 



Cynipa oalMa, notes 654 



Cynodon plecto atachyum, studies. 66 



Cynomyia cadaverina, hibernation — 262 



Oyphella hevew, notes —-.—,- 62, 759 



