Apr. i-Sept. 15, 192 1 



Index 



595 



Citrus — Continued. Page 



sinensis — 

 effect of inoculation with Pseudomonas 



cilri 203-204 



susceptibility to Pseudomonas citri 350-361 



trifoliata — 

 effect of inoculation with Pseudomonas 



citri 200-202 



Syn. Poncirus trifoliata. 



Claucena lansium, susceptibility to Pseudo- 

 monas citri 341-346 



Clemelo, susceptibility to P seudoifionas citri. . 357 



Clonal varieties of Irish potatoes S43~573 



Cogon. See Imperata cylindracea. 



Coil — 

 lachryma-iobi, resistance to Sclerospora 



philippinensis 104 



ma yuen, resistance to Sclerospora philip- 

 pinensis 104 



Collins, G. N., and Kempton, J. H. (paper): 

 A Teosinte-Maize Hybrid 1-38 



Colorado potato beetles. See Leptinotarsa 

 decemlineata. 



Comandra pallida on northern Great Plains. . 65-72 



Complement-fixaticn test, germ-free filtrates 

 as antigens 513-515 



Composition and Density of the Native Vege- 

 tation in the Vicinity of the Northern Great 

 Plains Field Station (paper) 63-72 



Composts, manure-sulphur, effect on availa- 

 bility of potassiuai of greensand 239-256 



Conidia, production ixxGibberellasaubinetii. 235-237 



Copper sulphate, prevention of injury to seeds 

 by presoak method 363-392 



Corn. See Zea mays. 



Corn aphis. See Aphis maidis. 



Cosmopolites sordidus — 



control 45-46 



description 41-44 



history and distribution 39-40 



hosts 40-41 



life history ; 44-45 



Crabgrass. See Synlherisma sanguinalis. 



Daily Development of Kernels of Hannchen 

 Barley from Flowering to Maturity at Aber- 

 deen, Idaho (paper) 393-430 



Decline of Pseudomonas citri in the Soil 

 (paper) 207-223 



Development of Barley Kernels in Normal 

 and Clipped Spikes and the Limitations of 

 Awnless and Hooded Varieties (paper). . 431-472 



Dewberry, host of Gymnoconia inter stitialis. 505-506 



Dextrin and soluble starch in frozen wheat . . 187 



Dickson, James G.. and Johann, Helen 

 (paper): Production of Conidia in Gib- 

 berella saubinetii '. 235-237 



Dioxid, carbon, effect of calcium sulphate on 

 production in soil 51-52 



Dipotassium phosphate, effect on germina- 

 tion and growth 74-96 



Downy mildew of maize. See Sclerospora 

 philippinensis. 



Dox, Arthur W., and Yoder, Lester (paper): 

 Influence of Fermentation on the Starch 

 Content of Experimental Silage 173-179 



Draeculacephala molipes, failure to carry 

 sugar-cane mosaic J34, 13s 



Page 

 Drugs, effect on milk and fat production. . . 123-130 

 Dry matter in kernels from normal and 



clipped barley spikes 452-469 



Echinacea angustifolia on northern Great 



Plains 65-72 



Effect of Calcium Sulphate on the Solubility 



of Soils (paper) 47-54 



Effect of Drugs on Milk and Fat Production 



(paper) 123-130 



Effect of Manure-Sulphur Composts upon 



the Availability of the Potassium of Green- 

 sand (paper) 239-256 



Effect of Premature Freezing on Composition 



of Wheat (paper) 181-188 



Effect of Reaction of Solution on Germination 



of Seeds and on Growth of Seedlings (paper) 73-96 

 Eleusine coracana, effect of field heterogeneity 



on yield 291-294 



Elliott, Charlotte (paper): Halo-Blight of 



Oats 139-172 



Elym.us canadensis, host of Puccinia mon- 



tanensis 257 



Epitrix cucumeris, failure to transmit potato 



mosaic 329 



Epsom salts, effect on milk and fat produc- 

 tion 124 



Eremocitrus glauca, susceptibility to Pseudo- 

 monas citri 344, 345, 347 



Euchlaena — 



luzurians, host of Sclerospora philippinen^ 

 sis 104-123 



mexicana, hybrid with maize 1-38 



Euphorbia dentcta, host of Uromyces euphor- 



biae 259 



Evodia — 



latifolia, susceptibility to Pseudomonas 

 citri 345, 346 



rtdleyei, susceptibility to Pseudomonas 



citri 345> 346 



"False hybrids," susceptibility to Pseudo- 



m.07ias citri 359 



Fat production in milk, effect of drugs. . . . 123-130 

 Faustrime, susceptibility to Pseudomonas 



citri 354 



Faustrimon, susceptibility to Pseudomonas 



citri 354 



Faustrimedin, susceptibility to Pseudomonas 



citri 354 



Fennel, effect on milk and fat production. . 125-130 

 Fermentation, influence on the starch content 



of experimental silage 173-179 



Feronia — 



elephantum. Syn. Feronia limonia. 



limonia, susceptibility to Pseudomonas 



citri 342,34s 



Feroninae, susceptibility to Pseudomonas 



citri 342 



Feroniella lucida, susceptibility to Pseudo- 

 monas citri .^42, 34Si 347 



Ferric oxid in greensand 244 



Ferrous sulphate, effect on availability of 



potassium of greensand 242-^56 



Fiber, wool, influence of humidity on strength 



and elasticity 55-62 



Filtrates, germ-free, in complement-fixation 



test 513-SIS 



