888 



EXPERIMENT STATION RECORD. 



Phosphates— Continued. 



effect on plant respnation 230 



soils, R.I 21 



water requirements of crops 331 



fertilizing value 234, 532 



fixation in soils, Tex 423 



ground, fertilizing value 638 



in soils, availability 610 



insoluble, fertilizing value 128 



utilization 717 



mineral, solubility, Tex 423 



mining, in Micronesia 324 



of North Carolina, bibliography 521 



raw, fertilizing value 323 



residual effects 135, 324 



soil, solubility 301 



solubility investigations 20, 717 



statistics 25 



value in agriculture 324 



{See also Superphosphates.) 



Phosphatic feed lime, examination 615 



fertilizers, effect on plants 225 



for plums 23 



slag, composition 324 



fertilizing value 22, 23, 24, 32, 



127, 232, 234, 323, 324, 626, 638, 639 



for marsh soils 224 



residual effect 324 



Phosphatids, determination 410 



extracting from plants 611 



plant, studies 7, 8 



Phosphoric acid — 



absorption by plants 519 



as a seed disinfectant 248 



assimilation by crops 524 



availability as related to clover sickness. . 647 



role of bacteria in 717 



biochemical cycle in soils 317 



determination as magnesium ammonium 



phosphate 706 



in cereals 417 



effect on decomposition of green manures . 625 



invertase, U.S.D.A 110 



muck soils 120 



fertilizing value 224, 627, 635, 640 



for tomatoes 241 



in soils, interpretation, U.S.D.A 508 



studies, Tex 423 



urine, studies 375 



relation to sugar beet diseases 348 



soluble, relation to soil fertility 519 



Phosphorite, relation to clover sickness 647 



Phosphorus- 

 body in ricinus leaves 8 



carbon, and nitrogen, ratio in soils, 111 423 



compounds, relation to beriberi 793 



determination in phosphate precipitates. 303 



excretion by rats, Wis 569 



fertilizing value 232 



N.Y.Comell 138 



P.R 238 



Pa 634 



hydrolysis by enzyms 611 



in meat 512 



U.S.D.A 510 



seeds, relation to nonprotein bodies. . . 702 



Inorganic, determination, Ohio 303 



Phosphorus— Continued. 



metabolism as affected by fish diet 770 



lecithin 470 



in man 69 



organic and inorganic, differentiation 512 



soluble, in feeding stuffs. Wis 511 



value in agriculture 18 



Photometer for home use, construction. Pa. . 592 

 Photosynthesis, modem theories and bibliog- 

 raphy 330 



Phoxopteris nubeculana, notes, Me 254 



Phragmidia, monograph 48 



new species, descriptions 48 



Phragmidium subcorticium, description 355, 654 



treatment 654 



Phthora vastatrix, studies 749 



Phthorimxa operculella. (See Potato-tuber 



worm.) 



Phycitina spp., parasitic on wild silkworm. . . 560 



Phycomyces nitens, phototropic reaction 724 



Phycomycetes, notes 740 



Phyllachora sorghi n.sp., description 740 



Phyllite soils of New South Wales, analyses. . 521 



Phyllocoptes {Eriophyes) quadripes, notes 667 



vitis, injuries by 766 



Phyllosticta apii, treatment 148 



cavarx n. sp., description 653 



dracxnx, n. sp., description 153 



medicaginis, notes 740 



n. spp., descriptions 347 



Phyllothrips fasciculata, notes 557 



Phylloxera, grapes resistant to, U.S.D.A 641 



in Italy, review 144 



Phylloxera vastatrix. (See Grape-phylloxera.) 



Physcus flavivenlris, description 664 



varicornis, notes, U.S.D.A 157 



Physical training, bibliography 95 



Physics, relation to agriculture 399 



Physiography of Alaska, U.S.D.A — 444 



northeastern Kentucky 119 



northern Canada 356 



Physiological methods, handbook and bibli- 

 ography 770 



Physiology, comparative, bibliography 670 



course in, for rural schools 195 



international catalogue 770 



of domestic animals, text-book . . 670 



plant, progress in 210 



relation to agriculture 399 



animal breeding 571 



Physothorax russelli n. sp., description 367 



Phytin, effect on precipitation of inorganic 



phosphorus, Ohio 303 



extraction from plants 611 



relation to beriberi 793 



Phytophthora agaves, notes 152 



cactorum, studies 452 



infestans. (See Potato rot and 

 Potato blight.) 



omnivora, studies 149, 549, 748 



sp., investigations 548, 748 



Phytophtus vitis, notes 247 



Picea excelsa, effect of injury to cotyledons. . . 723 



Pickles, analyses. Me 567 



cucumber, salting and curing 711 



Monascus barkeri in 768 



Pieris cratsegi, notes 756 



