INDEX OF SUBJECTS. 



979 



Pines, western j^ellow, growth in pure and 

 composite stands, 



U.S.D.A 43 



planting, U.S.D. A... 544 



white, blister rust of, U.S.D.A 554 



diseases of 851 



yellow, habitat extension, U.S.D.A.. . 545 



reforestation, U.S.D.A 544 



tests of strength 387 



Pipe, concrete, construction 487 



for irrigation water 485 



Pipes, flow of water in 181, 290, 891 



theory of loads on in ditches 685 



Piroplasma caballi, notes 83 



ovin, occurrence in Dalmatia 482 



Piroplasmosis, bovine. (See Te.xas fever.) 



equine, in Canal Zone 83, 483 



Panama 682 



in sheep 81, 482 



solipeds in Transcaucasia. . 582 

 infection through mucous 



membranes of dogs 483 



Pisum sativum as affected by light 526 



Pith-ray flecks in wood, U.S.D.A 44 



Pituitary body extracts, effect on cows 578 



Pituitrin, pressor effect on 882 



Plague eradication in Porto Rico 158 



transmission by insects 756 



Plant alkaloids, treatise 503 



and animal tumors, comparison 548 



assimilation as afEected by sunlight 26 



breeding- 

 experiments with cabbage, Va 638 



cotton, N.C 31 



flax 634 



oats 532 



peppers 434 



stocks, peas, and 



beans 433 



timothy 635 



tobacco, Conn. 



State 536 



wheat 532 



N.C 31 



U.S.D.A. 38 



Wash.... 835 



heterozygosis in 31 



in Scandinavia, handbook 636 



plats, management 636 



review of literature 830 



theory of cryptomery 434 



factors 433 



cells, chondriosomes in 217 



permeabihty 627, 628 



physical-chemical analysis 408 



characteristics, relation to seed weight. 522 



chemistry, progress in 408 



diseases — 



in Indo China 46 



Iowa 445 



New South Wales 46 



Southern Nigeria 547 



Virginia, Va 645 



Wurttemberg 845 



notes 243, 341, 446, 645 



Conn.State 547 



Page. 

 Plant diseases — Continued. 



notes, Oreg 150 



P.R 645 



relation to meteorological condi- 

 tions 44 



review of Hterature 445 



treatise 150,546,644 



(Sec also different host -plants.) 



distribution, relation to evaporation.. . 826 

 embryos as afEected by endosperm of 



seeds 421 



food in soils as aflectcd by fertiUzers,Va 623 

 production as affected by soil ster- 



iUzation 122 



growth as affected by — 



acids, bases, and salts 26 



boron compounds 219 



difl'erent substances 421 



fertilizer salts 329 



nitrogenous soil constituents 219 



shade, U.S.D.A 130 



smoke 422 



thorium X 131 



growth, cause 420 



power e.xerted in 827 



relation to soil temperature ... 19 



hybrids, factor transmission in 433 



heredity of form and structure 



in,Miss 320 



sterility in 320 



inspection. {See Nursery inspection.) 

 Uce injurious to orchard and bush 



fruits, Oreg 158 



notes 854 



Me 251 



remedies, N.Y. State 356 



{See also Apple aphis, etc.) 



morphology, bibliography 626 



nutrition, studies, N.Y. State... 22 



parasites and hosts, chemical relation- 

 ship 323 



notes 341 



physiology, bibliography 626 



progress in 408 



Quarantine Act, notes, U.S.D.A 342 



succession, role of light ui 218 



tissues, growing, resphation in gases, 



N.Y.Cornell 538 



Plantains, varieties for Philippines 839 



in Seychelles 839 



Plants- 

 absorption of nitrogen by 732 



adsorption of nitrogen by 732 



animals afEecting 547 



as affected by coal-tar vapors 530 



colored light 526 



formaldehyde 827 



graphite 19 



high temperatures 27 



light 526 



salt solutions 218 



suppression of endosperm. 629 



tobacco smoke 30 



assimilation of permutite nitrogen by. . 127, 517 



carbon assimilation of 28 



classification, book 216 



