lUlS] 



INDEX OF SUBJECTS. 



927 



Asparagus — Paso. 



beetle, notes, U.S.D.A CI 



breeding and selection, Mo 640 



canning, U.S.D.A 41 



culture, U.S.D.A 41 



culture experiments, Pa 40 



Rhizoctonia disease, treatment- 648 



rust, notes, U.S.D.A 41 



varieties. Pa 40, 241 



Aspen as a temporary forest type 847 



Aspergillus niger, growth in plant de- 

 coctions 524 



Asphalt, production in United States 692 

 Asphondylia webstcri n.sp., descrip- 

 tion 563 



A spidiotiphagus dtrinus, endophagy- 460 

 Aspidiotus — 



perniciosus. {See San Jos6 



scale.) 

 rapax. (See Greedy scale.) 



spp. on olive, Cal 157 



Aspilogastridse of North America 365 



Asses, color inheritance and sex ratio- 574 

 Association of — 



American Agricultural Colleges 



and Experiment Stations 800 



American Dairy, Food, and Drug 



Officials, proceedings 768 



Asterolecanium variolosum (A. quer- 



cicola), notes 654 



Astragalus molUssimuB, histology 481 



Ataxia crypta, notes, U.S.D.A 363 



Athalia flacca, notes 164 



Atmometers, discussion and use 523 



Atmosphere — 



and the N^v^, aqueous exchange 



between, U.S.D.A 812 



aqueous vapor of, U.S.D.A 210 



ionic densities, U.S.D.A 510 



moisture condition, index 522 



motion in lowest layers, U.S.D.A. 511 



nitrogen in, U.S.D.A 509 



radiation in, U.S.D.A 210 



revolving fluid in, U.S.D.A 511 



transparency for ultraviolet ra- 

 diation, U.S.D.A 511 



windy, Doppler's principle, U.S. 



D.A 510 



Atmospheric — 



electricity during solar eclipse, 



U.S.D.A 510 



optical disturbances, U.S.D.A 511 



polarization from great heights, 



U.S.D.A 811 



pressure. (See Barometric pres- 

 sure.) 

 temperature. (See Temperature.) 



AUa tetsana, occurrence in Louisiana 564 



Attagenus pleiius, life history 557 



Aurora of August, 1917, U.S.D.A— 210 

 Auroras, device for observing radi- 

 ants, U.S.D.A 511 



Australia, tropical, settlement, U.S. 



D.A 812 



Automeris janus, notes 159 



Auxoamylases, nitrogenous, notes 311 



Page. 



A\ccado fungus rot, description 454 



Avocados — 



culture 541 



Improvement, Hawaii 842 



Azotohacter ehroococ um — 



fixation of nitrogen by 427 



in Rus&ian soils 428 



review of investigations 426 



Azotobacter, symbiosis with water 



plants 419 



Babul tree, description 45 



Bacilli, pathogenic, detection in wat- 

 er and sewage 188 



Bacillus — 



abortus in milk 286 



hotulinus, relation to forage 



poisoning, Ky .383,384 



citrimaculans n.sp., description- 552 

 coli communis, action on glucose 

 and mannitol in presence of 



peptone 709 



coli, longevity in water 389, 488 



coli, notes 354 



cuniculicida, isolation from 



house fly 362 



hoplosternus n.sp., description- 162 



liparis parasitizing gipsy moth_ 159 

 lymantricB parasitizing gipsy 



moth 159 



mclolontha, studies 162 



morulans n.sp., description 250 



ovisepticus, studies 887 



perfHngens, studies 503, 504 



pyogenes, suppuration due to 585 



smegmatis, acid-proofness of 



strains , 485 



sotto, toxin of 466 



sporogenes, biochemistry 483 



sporogenes, studies 503, 504 



typhi gallinarum alcalifaciens, 

 biochemical and agglutinating 



properties 788 



typhosus, longevity in water 488 



toelcliii and blaclileg bacillus, re- 

 semblance 587 



welchii, antitoxin for 379 



welchii, studies 483, 503, 504 



welchii, toxins of 378, 584, 783 



Bacon, price in England 90 



Bacteria — 



agglutinating, biochemical activ- 

 ity 181 



as affected by pressure 584 



as affected by spices 469 



determination in ice cream, 



U.S.D.A 75 



determination in milk 615 



in milk, soils, etc. (See Milk, 



Soil, etc.) 

 nltrogen-flxing, action of olygo- 



dynamic elements on 428 



nitrogen-fixing, of manure 27 



nltrogen-flxing, physiology and 



biology 42(;, 427 



