976 



EXPERIMENT STATION RECORD. 



[Vol. 38 



Pineapple — Page. 



disease, new, In Philippines 853 



weevil, notes 163 



Pineapples — 



fertilizer experiments, P.R 748 



Insects affecting 459 



seedling, growing, Hawaii 841 



varieties, Hawaii 842 



Plneno, therapeutic value 585 



Pinus longifolia timber, contraction 



and warping while seasoning 751 



Piperidin, nitrification as affected by 



lime, Ala.College 119 



Pipette — 



safety, new form 203 



washing device 203, 803 



Pipiza califomica n.sp., description- 863 

 Piroplasma higcminum in cows in 



Eritrea 888 



Plroplasmosis, bovine, in Turkey 183 



(See also Texas fever.) 



Pissodes strobi, notes 459 



Pisum, genetic factors, D.S.D.A 226 



Plagiolepis longipes, studies 364 



Plague, transmission by bedbugs 559 



Plant — 



activities, relation to sun spots- 114 

 associations in western Pennsyl- 

 vania 425 



breeding experiments, control of 



stray pollen in 430 



breeding, review of investiga- 

 tions 367 



breeding, rod-row tests, U.S. 



D.A 429 



breeding, selection problem in 64 



constituents, humiflcation 26, 27 



diseases — 



as an economic study 349 



control in Ontario, Can_ 545, 546 



control in United States 256 



dissemination by rain, U.S. 



D.A 47 



In Barbados 350 



in Canada, Can 545, 546, 646 



in Cuba 557 



In Dutch East Indies 548 



in Germany 448 



in Hawaii, Hawaii 848 



in India 350, 547 



in Indiana 556 



in Italy 351 



in Michigan 545 



in Porto Rico 147 



in Scotland 546 



In Switzerland 350 



In Wageningen 147 



In Washington 47 



international control 349 



mosaic 48 



notes, N.Mex 646 



notes. Wash 298 



textbook 94 



(See also different host 

 plants.) 



ecology In agricultural courses- 195 



embryos, nutrition and growth- 127 



Plant — Continued. Page. 



growth, accessory factors for 328 



growth as affected by air move- 

 ment 22.". 



growth, metabolism, and imbibi- 

 tion 729 



growth, seasonal variations 627 



Inspection. (See Nursery in- 

 spection.) 



juices, preservation 507 



lice In Texas 859 



lice, notes, Ohio 654 



lice. (See also Apple aphis, 

 etc.) 



membranes, permeability 126 



metabolism, buffer processes in_ 821 



names, dictionary of 125 



organs, modification due to 



ecological conditions 331 



pathologists, war emergency 



board 100 



pathology, textbook 147 



physiology at Johns Hopkins 



University 525 



physiology, treatise 728 



roots, oxygen requirements 628 



succession in Colorado 23 



tendrils and branch nodes, for- 

 mation 822 



tissue, determination of freez- 

 ing point 523 



Plantago, variegation in 731 



Plantain diseases in India 351, 547 



Plants — 



as affected by potassium cyanid- 855 



Chinese, in British Isles 39 



distribution by ocean currents- 125 



electro-culture experiments 525, 526 



electro-motive phenomena in 822 



fiber-producing, check list 637 



forcing 39 



forcing experiments, Vt 443 



greenhouse, fumigation, U.S.D.A- 258 



immunity to insects 458 



imports, U.S.D.A 629 



indigenous to Chile 336 



Injury by other plants 221 



medicinal, of Chile 336 



mosaic diseases 48 



mutilated, regeneration 129 



of Northern Nigeria, Hausa 



names 525 



ornamental, culture e x p e r i- 



ments, U.S.D.A 444 



ornamental, culture in bogs 447 



ornamental, diseases of, Ohio 252 



oxidation and reduction in 223 



permeability studies 25 



poisoning by certain elements 628 



poisonous, notes, Can 646 



propagation, treatise 539 



rarer elements In, U.S.D.A 409 



rest period in, Mo 640 



self-sterile, self-fertility in 226 



self-sterility in 426, 823 



sexual cycle 525 



sugar translocation In 224 



