966 



EXPERIMENT STATION RECORD. 



[Vol. 37 



Pear— Continued. Tage. 



thrips, control in British Columbia 55,462 



thrips, studies 257 



Pears- 

 acid content 714 



culture in Mesa County, Colo 24 1 



culture in Ontario 544 



drying 114,509 



fall t'. spring planting, Mo 743 



pollination experiments. N.Mex 40 



pruning and training, W.Va 344 



spraying, N.J 744 



varieties, Mont 241 



varieties for Ohio, Ohio 241 



Peas— 



and oats, seeding experiments, Idaho 640 



and oats silage for dairy cows. Wash 75 



bushel weights 8S9 



culture experiments S25 



culture experiments, Idalio 30 



culture experiments, La 529 



culture in Washington. Wash 96 



drying 509 



field , culture. Wash 337 



field, culture experiments, Idaho 30 



field, culture experiments, Minn 227 



field, culture for hay and seed, Nev 436 



field, hogging ofT. Idaho M, 68 



field, irrigation experiments. Idaho 640 



field, sec'iing experiments. Idaho 30 



field, selection experiments, N'cv 32 



field, varieties 135 



field, varieties, Idaho. 2.., 30, 640 



field, varieties. Minn 228 



field, varieties, Nev 32 



field, varieties, Oreg 530 



field, varieties. Wash 33,337 



improvement in Canada 831 



nitrogen metabolism 24 



seed color variation in 331 



subsoiling exi)eriments 732 



varieties 825 



Peat— 



as a source of organic ammoniates 815 



bacterized.fertihzing value 426,629,719,814 



bogs, converting into meadows 826 



digestibility and productive value, Tex... 865 



fertilizing value, judging 216 



lands or soils. (Sm Soils, peat.) 

 Pecan- 

 catkins, disease of 844 



diel)3Ck. investigations, Kla 652 



diseases , notes 756 



Pecans— 



culturein Maryland 345 



varieties, Oa 44 



winterkilling, sun scald, or sour sap 7.S5 



Pecarian^ulatua bangsi n. subsp., description. 757 



Pecatonica Ki ver, flood control 186 



Pectic substances of plants 309 



Pectin, preparation. Wash 715 



Pediculjusspp.. studies 850 



Pegoviyafusciceps, notes S54 



Pelalad^na peliucida, notes 763 



Pellagra, relation to sewage disposal 694 



Pemphigus belx, notes, Mont 255 



Pmicillium— Page. 



eipansum, growth in plant decoctions. . . 728 



spp., nitrogen fixation by 129 



spp. , on orchard fruits 550 



Pennsy 1 vania — 



College and Station, notes 98, 197, 499, 898 



Institute of Animal Nutrition , notes 797 



Pentoses, determination 617 



Peonies, treatise 145 



Pepper- 

 analyses and standards 112 



bacterial diseases, notes, Fla 652 



black spot, notes 841 



cress seeds, germination tests 26,431 



culture and diseases in Dutch East 



Indies 248,646 



culture experiments, Guam 742 



fertilizer erperiments 215, 343 



fertilizer experiments, Guam 742 



Pepsin — 



as a subs tit u te for rennet , Can 578 



1 ise in cheese making 175, 373, 778, 875 



Peptone anaphylatoxin, studies 581 



PcTanabTiii scahTicoUis, notes, Wash 54 



Perchlorates, determination in Chilesaltpeter, 111 



Percrjstallization , notes 409 



PeridfTmium — 



ribkola, descriyition 354 



spp, , alternate forms 844, S45 



tlTobi in Canada ."iSS 



ttrobi on Swiss pine 253 



Ptrilampui hj/alinm, leaf oviposition 162 



Perisierola — 



tmigrata n.sp. , description 589 



emigrata, parasitic on pink bollworm 667 



ni^i/fmur, notes 569 



Permeability — 



of plant tissue, determination 128 



studies, tissue tension method 326 



Perodipvs ordii luieolus n, subsp., description. 757 

 Peromyscui eremicus papagensis n. subsp,, de- 

 script ion 757 



Peronospora — 



effiua , note,-^ 550 



via\/dU, studies 5.')2 



schUideni, noles 553 



Peroxidase, action on chlorophyll 203 



Persimmons — 



acid content 714 



Japanese, anthracnose of 656 



Perstillation , notes 409 



Peruvian bark, methods of analysis 113 



Pervaporation, notes 409 



Pestaloizia paimajrum, notes 252, 253, 452 



Petroleum fuels, carburetlon 188 



Pe2i:ella ombrophilacea n,sp., notes 148 



Phacidiella discolor, notes 246 



Phacidium inftstans, notes 45S 



Phalonia sparlinana, life liistory 35S 



PAaonia spp., studies 764 



Pharbitii hederacea, fasciation in 434 



Phaseolus — 



aconitifolitu, culture experiments, Hawaii 131 



mungo for classroom work in genet ics 831 



semierect^s as a green manure, Hawaii. . . 320 



Phenol, atisotptiou by barley seeds 25 



