Jan. 6-Mar. 31, 1919 



Index 



353 



Page 



Dacnusa scaptomyzae, parasite of Pegomyia 

 calyptraia 237-J38 



Dactylis glomerata, host of Puccinia graminis 

 avenae 58-77 



Determination of Acidity and Titrable Nitro- 

 gen in Wheat with the Hydrogen Electrode 

 (paper) 1-13 



Diboikriocepkalus latus, toxity 255 



Dock. See Rumex crispus. 



Dowell, C. T. (paper): Cyanogensis in Andro- 

 pogon sorghum 175-181 



Drouth, effect on morphology of Puccinia 

 graminis 44, 70-71 



Durum wheat. See Triticum durum. 



Ecological factors, effect on morphology of 

 urediniospores of Pucania graminis 43~77 



Effect of Certain Compounds of Barium and 

 Strontium on the Growth of Plants (pa- 

 per) 183-194 



Effect of Certain Ecological Factors on the 

 Morphology of the Uredmiospores of Puc- 

 cinia graminis (paper) 43-77 



Effect of Certain Grain Rations on the Growth 

 of the White Leghorn Chick (paper) 305-312 



Einkom wheat. See Triticum mcmococcutn. 



Electrode, hydrogen, determination of acidity 

 and titrable nitrogen in wheat 1-13 



Elymus — 

 canadensis, host of Puccinia graminis secalis . 56-77 

 condensatus host of Puccinia graminis trilici- 



compacii 54-77 



glaucus, host of Puccinia graminis tritici- 



com,pacti 54-77 



robuslus, host of Puccinia gramints secalis. . 56-77 

 virginicus, host of Puccinia graminis secalis. . 56-77 



Emmer wheat. See Triticum dicoccum. 



Epidote, solubility of lime, magnesia, and 

 potash in 259-261 



Eucklaena mexicana, host of Physoderma 

 zeae-maydis 142 



Euielus bruchophagi — 



adult 171-173 



hibernation 171 



larva 171 



parasite of Bruchophagus funehris 171-172 



pupa 171 



Ferric — 

 carbonate, effect on nitric nitrogen in soil . 118-135 

 chlorid, effect on nitric nitrogen in soil. . . 118-135 

 nitrate, effect on nitric nitrogen in soil. . 118-135 

 oxid in com grown with barium and stron- 

 tium compounds 192 



sulphate, effect on nitric nitrogen in soil. 118-135 



Fertilizer, effect on nitrification of add soils. . 27-42 



Field Study of the Influence of Organic Mat- 

 ter upon the Water-Holding Capacity of a 

 Silt- Loam Soil, A (paper) 263-278 



Fisher, D. F., et al. (paper): Apple-Scald. 195-217 



Flicker. See Colaptes auratus. 



Flour, wheat, determination of acidity and 

 titrable nitrogen 1-13 



Fluorescent organisms, characteristics 338-342 



" Frogeye," caused by Cercospora nicotianae 219-220 



Fromme, F. D., and Murray, T. J. (paper): 

 Angular-Leafspot of Tobacco, an Unde- 

 scribed Bacterial Disease 219-228 



Page 



Frost, S. W. (paper): Two Species of Pego- 

 myia Mining the Leaves of Dock 229-244 



Fusarium-blight of potatoes — 



causal fungus 286-287 



control 297-298 



description 280-281 



inoculation experiments 281-283 



mode of infection 284 



resistance of host 295-296 



seed-piece infection 284-286 



soil conditions 296-297 



Fusariimi-B light of Potatoes under Irrigation 

 (paper) 279-303 



Fusarium oiysporum — 



cause of Fusarivun-bhght 279-303 



effect on germination of Irish potatoes 298 



Gardiner, R. F. (paper): SolubiUty of Lime. 

 Magnesia, and Potash in Such Minerals as 

 Epidote, Chrysohte, and Muscovite, Espe- 

 cially in Regard to Soil Relationships ... 259 «6i 



Glucoside in Andropogon sorghum 175-181 



Goldthorpe, H. C.,et al. (paper): Influence of 

 Salts on the Nitric-Nitrogen Accumulation 

 in the Soil 107-135 



Gowen, John W. (paper): Variations and 

 Mode of Secretion of Milk Solids 79-103 



Greaves, J. E., Carter. E. G., and Gold- 

 thorpe, H. C. (paper): Influence of Salts 

 on the Nitric-Nitrogen Accumulation in 

 the Soil 107-135 



Hemolytic nature of fluid of Ascaris 253-258 



Holcus lanatus, host of Puccinia graminis 



agrostis 63-77 



Hordeum — 



jubatum, host of Puccinia graminis 51-77 



pusillum, host of Puccinia graminis avenae. 58-77 



spp., host of Puccinia graminis 43-77 



vulgare, host of Puccinia graminis trilici- 

 compacli 54-77 



Humidity, effect on — 



apple-scald 200-201 



morphology of Puccinia graminis 70-77 



Hydrocyanic acid. See Acid, hydrocyanic. 



Hydrogen electrode, determination of acidity 

 and titrable nitrogen in wheat 1-13 



Hydrogen-ion concentration of wheat, method 

 for determining 1-13 



Hypochlorous acid. See Acid, hypochlo- 

 rous. 



Hystrii patula, host of Puccinia graminis seca- 

 lis 56-77 



Influence of Foreign Pollen on the Develop- 

 ment of Vanilla Fruits (paper) 245-252 



Influence of Salts on the Nitric-Nitrogen Ac- 

 cumulation in the Soil (paper) 107-135 



Injury to Casuarina Trees in Southern Flor- 

 ida by the Mangrove Borer (paper) 155-164 



Irish potato. See Solanum tuberosum. 



Iron salts, effect on nitric nitrogen in soil. . 118-135 



Iron sulphate, effect on germination of Irish 

 potatoes 298 



Irrigation, effect on fusarium-blight of Sola- 

 num tuberosum 279-303 



Kastle, Joseph H., et al. (paper): Effect of 

 Certain Grain Rations on the Growth of the 

 White Leghorn Chick 305-312 



