July 2-Sept. 24, 1917 



Index 



657 



Page 

 Tague, E. L., and Swanson, C. O. (paper): 



Chemical Studies in Making Alfalfa Silage 275-292 

 Tarsonemus — 

 pallidus — 



control 3S7-389 



- description 578-383 



dissemination 377 



distribution 375 



history 373-374 



host plant 377 



injury from 378 



life history 383-3S6 



nomenclature 375-376 



rearing 386-387 



systematic relationship 3 76 



spp., cause of plant diseases 377 



Temperature — 



efifcct on microorganisms in silage 75-83 



effect on evaporation 218-239, 253 



index of volatility of compounds to insects. 370 



Terpinol, toxicity to insects 367, 369 



Tetracarbonimid, comparison with cyanuric 



acid 87-SS 



Thiophene, toxicity to insects 367,368,370 



Thomas, H. E., and Fromme, F. D. (paper): 



Blacic Rootrot of the Apple 163-174 



Thuja — 



occidentalis, host of Phoma sp 538 



oricntalis, host of Phoma sp 538 



piicata, host of Phoma sp 538 



Thymol, toxicity to insects 368. 370 



Time, influence on passage of feed through 



steer 5S-63 



Tobacco. See Nicotiana labacum. 

 Tobacco spraj^ See Nicotine sulphate. 



Toluene, toxicity to insects 367,369. 370 



Toughness of Bituminous Aggregates (pa- 

 per) 319-330 



Toxic Values and Killing Efficiency of the 



Arsenates (paper) 199-207 



Toxicity, organic compounds, relation to 



volatility 365-571 



Triiicum spp. — 



distribution of new disease of 51 



control of new disease of 53 



eilect of boron on S91-597 



effect on — 



growth of cattle 176-197 



milk secretion of cattle 179-197 



reproduction of cattle 179-197 



probable cause of new disease of 52 



sym-ptoms of new disease of 52 



Turnip. See Brassica rapa. 

 Turpin, H. AV., and Harris, F. S. (paper): 

 Movement and Distribution of Moisture in 



the Soil 113-15S 



Two New Cambium Miners, Diptera (pa- 

 per) 313-318 



Ulmus — 

 amcricana, host plant of Eriosoma pyricola. 68 

 campcstris, host plant of Eriosoma pyricola. 68 



Urcdinia of Puccinia graminis — 



appearance 486-487 



development 486-487 



Urediniospores of Puccinia graminis — 



morphology 484-488 



results of inoculation on various hosts. . . . 432-484 



Page 



Valeric acid. See Acid, valeric. 



Vitamines, effect on — 



milk secretion in cattle 187-189 



reproduction of cattle 187-189 



growth of cattle 187-189 



Volatility of Organic Compounds as an Index 

 of the Toxicity of Their Vapors to Insects 

 (paper) 365-371 



Walters, E. H., and Wise, L. E. (paper): Iso- 

 lation of Cyanuric Acid from Soil 85-92 



Water — 



absorption by plant from soil 41-42 



effect of source of supply on soil mois- 

 ture 149-150 



evaporation — 



accuracy of measurements 216-217 



description of tanks used for 249 



Effect of— 



location ou 218-238, 250-259 



size of water surfaces on 218-259 



stream-bed materials on 242-259 



temperature on 218-239, 253 



weather 241-242 



wind velocity 239-241 



effect on irrigation 209 



flowing, effect on evaporation 227-229 



movement in soil in relation to — 



hygroscopicity 391-428 



initial moistness 391-428 



solvent of quassiin powder 510-514 



still, effect on evaporation 227-229 



variation in leaves of — 



A ndropogon sorghum 11-46 



Zea mays 11-46 



Watercress. See Radicula sinuata. 

 Watercress, wild. See Roripa sinuata. 

 Weather — 

 effect on — 



disease dissemination 639-648 



evaporation 241-242 



soil moisture 119-120, 130-131, 152 



relation of, to moisture from surface soil. . . 418 

 Weir, J. R. (paper): A Needle Blight of 



Douglas Fir 99-104 



Wheat. See Triticum spp. 

 Wilson, J. B., and Cook, F. C. (paper): 

 Effect of Three Annual AppHcations of 



Boron on Wheat S9I-S97 



Wilting, influence on alfalfa silage 27S-279 



Wind- 

 factor in disease dissemination 639-648 



velocity of, effect on evaporation 239-241 



Wind-Blown Rain, a Factor in Disease Dis- 

 semination (paper) 639-648 



Wise, L. E., and Walters, E. H. (paper): 



Isolation of Cyanuric Acid from Soil 85-92 



Woolly pear aphis. See Eriosoma pyricola. 



Xylaria rootrot. See Rootrot, black. 



Xylaria spp. — 

 causal organisms of black rootrot of Malus 



syhestris 166-1 72 



culture features 167-168 



inoculations of Mahts sylvesiris with .... 168-170 



pathogenicity 168 



See also Rootrot, black. 



Xylene, toxicity to insects 3671369)370 



