982 



EXPERIMENT STATION EECOED. 



Plant — Continued. Page. 



Inspection. (See Nursery In- 

 spection.) 



lice, effect on plant cells 444 



lice, notes 252 



(See also Apple aphis, 

 etc.) 

 nutrition, review of investiga- 

 tions 512 



nutrition, rSle of chlorin in — 725 



nutrition, theory of 124 



organs, penetration by light 427 



oxidases, review of literature — 426 

 parasites, adaptive specializa- 

 tion 740 



physiology, electrical conductiv- 

 ity in 626 



physiology, relation to pruning, 



Oreg 837 



physiology, review of Investi- 

 gations 512 



physiology, treatise 425 



pigments, chemistry of 802 



pigments, production 329 



poisons and stimulants, inor- 

 ganic, Investigations 327 



quarantine regulations in Porto 



Rico 441 



roots, effect on soils 216 



roots, plant food set free by 325 



shoots, cell adjustment follow- 

 ing decapitation or inversion. 827 



Plantain disease, notes 545 



Plants — 



absorption of ions by 521 



anthoeyanin in 824 



aromatic, culture 643 



as affected by antimoniacal 



salts 30 



as affected by climatic com- 

 plexes and other external fac- 

 tors 221 



as affected by environment 126 



as affected by freezing 428 



as affected by gas 629 



as affected by naphthalin 523 



as affected by plant metabolism 



products • 825 



as affected by salicylic alde- 

 hyde 328 



as affected by smoke 428, 629 



as affected by ultraviolet rays__ 28 



blossoming dates, U.S.D.A 825 



colonial, treatise 437 



deep-rooted, for grass land 431 



desert, investigations 221 



desert, osmotic pressure in 628 



electroculture experiments 827 



electroculture, review of litera- 

 ture 690 



feeding power 519, 626 



forcing to blossom during win- 

 ter 521 



fumigation with hydrocyanic 



acid gas 522 



growth as affected by atmos- 

 pheric pollution 126 



Plants — Continued. Page, 



growth as affected by carbon 



bisulphld. Wis 323 



growth as affected by light__ 128, 826 

 growth as affected by radio- 

 active earth 123 



growth in charcoal 540 



growth in mercury vapor light- 826 

 growth in relation to climate, 



U.S.D.A 116 



growth in water culture 223, 628 



growth, internal factors in 827 



growth, studies 28, 221 



healthy bactericidal properties. 740 



hellotropism in 129 



herbaceous, culture experiments, 



Can 236 



Immunity in 740 



imports, U.S.D.A 827 



irritability in 29 



living, experiments with 495 



medicinal, culture 643 



medicinal, culture. Can 842 



nutritive exchanges In 425 



of New Zealand for North Amer- 

 ican gardens 842 



oil production in 629 



oleaginous, culture and utiliza- 

 tion 438 



ornamental, for unfavorable city 



conditions i 442 



oxidation ferments of 409 



perennial, for southeastern 



Alaska, Alaska 638 



phylogenetic relationships 822 



physiological characters of 629 



poisonous, feeding experiments 



with 384i 



poisonous. In Western Austra- 

 lia 846 



production capacity, inheritance- 822 



resistance to diseases 740 



rest period in, Mo 223, 520 



root systems of 526 



seed, of Vermont, Vt 330 



transpiration and sap ascent in, 



treatise 127 



transpiration in 628 



tropical, treatise 221 



useful, text-book 96 



variation and selection in 822 



variegated, anatomy of 724 



water culture, new method 628 



water requirements, U.S.D.A 726 



wild, use as food 461 



woody, rest period In, Mo 223 



Plasmodiophora irassicCB. (See Cab- 

 bage club root.) 

 Plasmopara — 



cuhensis, notes 146 



viticola, studies 55, 248, 545 



Plaster, land. (See Gypsum.) 

 Plectodiacella piri — 



n.g. and n.sp., description 649 



notes 350 



PUnodomus destruens, distribution 



and prevalence 74S 



