1917] 



INDEX OF SUBJECTS. 



985 



Volcanic— Page. 



ash, analyses, Alaska 429 



rock, fertilizing value 332 



Voles, eradication in Italy 852 



yoZM<eZZa/rwc<i, temperature relation, U.S.D. A. 649 



Wagon tires, width of, U.S.D.A 787 



Wagons- 

 draft tests 388 



sizes and specifications, U.S.D.A 787 



Walnut— 



datana caterpillar, notes, Ohio 358 



oils, composition 803 



seedlings, variation in, Cal 140 



distribution of nitrogen in, Ky 269 



Wash bottle, nonspattcring, description 13 



Wasliing powders as insecticides, Ind 753 



Washington — 



College, notes 296 



Station bulletins, index 598 



Station, notes C97 



Water- 

 analyses 888 



analyses. Can 86 



artesian, for irrigation in Montana 486 



conductivity, preparation 504 



Cuban, analyses 511 



culture experiments, interpretation 731 



determination in bread 506 



determination in plant substances 713 



determination in soils, U.S.D.A 719 



disinfection 586 



eflect on nitrogen changes in soils 513 



evaporation from soils, U.S.D.A 421 



flow in lined canals 282 



flow in metal flumes 682 



flow in open channels 184, 585, 783 



flow in pipes 681,783 



flow in wood-stave pipes, U.S.D.A 281 



flow into open wells 87 



flow over weirs 282 



flow through orifices and tubes 488 



from sphagnum bogs, toxicity 320 



ground, for irrigation in Morgan Hill area, 



California 885 



ground, in southeastern Nevada 485 



hygiene, handbook 586 



irrigation , alkali content ,Utah 487 



irrigation, distribution 887 



loss from canals by seepage 585 



methods of examination 15 



methods of examination, N.Dak 362 



movement in gumbo soils, U.S.D.A 210 



oxygenated, eflect on germination of 



seeds 29 



potable, nitrates in 889 



power, development 783 



power of Alabama 885 



power project in Oregon 184 



power x«sources in United States 484 



jwwer, wooden flumes for 686 



public, laws in Idaho 384 



purification 183 



purification, algae of submerged sand 



filters in 87 



purification with calcium hypochlorite.. 889 



rain. (.See Rain.) 



rights laws in Idaho 384 



Water — Continued. Page. 



soluble B , formation in animal body 62 



strept ococci in 489 



supply for £irm homes. 284, 390, 891 



supply for farms, Ark 687 



supply for &rms. Can 86 



supply for milk plants, Mich 774 



supply in Victoria 682 



supply of lower Mississippi River basin. . 885 



supply of Massachusetts 484 



supply of Navajo and Hopi Indian reser- 

 vations 485 



supply of North Atlantic drainage basins . 184 

 supply of Pacific basins in Washington 



and upper Columbia River basin 282, 582 



supply of Pacific slope basins in Cali- 

 fornia 484 



supply of pampas of Argentina 886 



supply of Rogue and Willamette river 



valleys 282 



supply of Snake River basin 86 



supply of south Atlantic and eastern Gulf 



of Mexico basins 86 



supply, wood pipe for 87 



surface, colon bacilli in 284 



underground, locating 886 



wheel for irrigation in Philippines 185 



Watermelon seeds , analyses and use 611 



Waterworks, handbook 87 



Wattles of Australia, description 8!4 



Waxes, melting point , determination 15 



Weather — 



Bureau, report, U.S.D.A Ol.j 



Bureau service, extension of, U.S.D.A. . . 19 

 daily, graphical method of showing, 



U.S.D.A 19 



eflect on absorption of fertilizers by 



plants 510 



forecasting, U.S.D.A 19,811 



inlowatn 1915 207 



insurance, U.S.D.A 418 



map, treatise 509 



relation to daUy transpiration, U. S.D.A. 225 



wet and dry, persistence, U.S.D.A 18 



Weed- 

 ashes, eflect on tobacco soils 513 



diseases, notes 343 



seeds. (See Seeds, weed.) 

 Weeds- 

 destruction in wheat 534 



eradication 236 



eradication. Can 339 



identification 541 



notes, Vt 534 



of Michigan, Mich 739 



(See also specific plants.) 



WeevUs of northeastern America, treatise 157 



Weights and measures, inspection in Maine.. 467 



Weir formulas, derivation 282 



Wells, flow of water into 87 



West Virginia — 



Station, publications 294 



University and Station, notes 697 



Westem-wolths grass, culture experiments.. 735 

 A\Tieat— 



as a sole ration for animals, Wis 865 



bran, analyses, Ind 268 



