1920] 



INDEX OF SUBJECTS. 



977 



Phosphoric acid — Continued. 



determination, 115, 804. 



fertilizing value, 26. 



production from phosphate rock, 629. 



reverted, fertilizing value, 428. 



use in Bavaria, 629. 

 Phosphorus — 



content of marsh soils, 22. 



determination In organic solutions, 204. 



In butter, N.Y.Cornell, 469. 



in apple trees, N.H., 28. 



Income and outgo on dairy farms, 23. 



organic, of soil, 813. 

 Photometer, tint, use with raw sugars, 714. 

 Photosynthesis — 



development of conceptions, 227. 



temperature-coefficient, 132. 

 Phototropic stimulation, transmission, 132. 

 Phototropism — 



relation to swarming of bees, 851. 



theory of, 132. 

 PhragmiUs comtnunis as emergency feed, 



170. 

 PhtliMimwa heliopa on tobacco, 52. 

 Phycotnycca nitens, sexuality of, 524. 

 Phyllactinia- corylea on oak, 754. 

 Phylloglossum drummondii, new method of 



reproduction, 130. 

 Phyllosticta sp. on snapdragon, 658. 

 Phyllotrcta utana n. sp., notes, 854. 

 Phymatotrichum omnivorum, notes, 652. 

 Physiology, chemical, treatise, 365. 

 Phyaodirrma zea maydis — 



notes, 243. 



zoospores, destruction by natural ene- 

 mies, 750. 

 Phytopathology, practical applications of, 



44. 

 Phytophthora — 



cryptogea n. sp., description, 447. 



faberi, on coconut, 156. 



infcstans. (See Potato late blight.) 



sp. on coconut, 151. 



sp. on poppy, 49. 



spp., notes, 445, 658. 

 Picric acid for rock and soil blasting, 480. 

 Pickering sprays, preparation and adhesive 



properties, U.S.D.A., 843. 

 Picnometer, description, 806. 

 Pig- 

 clubs in Indiana, 195. 



houses, concrete, construction, 90. 

 Pigeons — 



behavior, 67. 



effect of deficient diet on organs, 369, 

 664. 



polyneuritic, as affected by thyroid 

 gland extract, 865. 



production of eye color in, 866. 



wild. Inheritance in, 67. 

 Pigmentation, relation of flavonol and an- 

 thocyanin pigments, 632. 



(See also Anthocyanin, and Color in- 

 heritance.) 

 Pigs — 



algaroba meal for, 70. 



and corn, price relations, U.S.D.A., 694. 



Pigs — Continued. 



as affected by beet molasses, 180. 

 barley for fattening, 774, 870; Okla., 



701. 

 birth weight, 111., 571. 

 bone glue for, 173. 

 broom corn seed for, 671. 

 cassava meal v. sweet potatoes for, 71. 

 city bred, profits, 695. 

 color inheritance, Iowa, 71. 

 dipping plants, U.S.D.A., 688. 

 Duroc-Jersey, history, 71. 

 elevator screenings for. Can., 868. 

 feed, cooperative buying, 673. 

 feeding experiments, 71, 573, 774 

 Ariz., 772; Can., 773; Ky., 373 

 Mo., 772; N.C., 465; Nebr., 673 

 Okla., 70; Pa., 572; U.S.D.A., 465. 

 feeding with barley variously prepared, 



Okla., 70. 

 garbage for, Ky., 374 ; Okla., 70. 

 growth estimation, 371. 

 hogging-down corn, U.S.D.A., 466. 

 hogging-down corn and soy beans, Ky., 



374. 

 housing, 485. 

 intestinal worms in, 384. 

 individual variation in. economy of 



gain, 572. 

 judging, treatise, 697. 

 of southern Albania, physical charac- 

 teristics, 173. 

 pasturing experiments, 773 ; La., 673 ; 



N.C., 465 ; U.S.D.A., 376, 466. 

 raising. Wash., 798. 

 raising, crop rotations for, Ohio, 333. 

 raising in Brazil, 72. 

 raising in China, 171, 673. 

 raising in Kansas, treatise, 72. 

 self-feeder experiments, 71. 

 self-feeders for, design, 485. 

 soy bean meal for, Ohio, 377. 

 sweet potatoes v. cassava meal for, 71. 

 Toniillo and Pjnto beans for, N.Mex., 



377. 

 vetch seed for, 373. 

 wallow for, plans, U.S.D.A., 688. 

 worm infested, value of medicinal mix- 

 tures, 467. 

 young, immunizing, 083. 

 (See also Sows and Swine.) 

 Piles, sheet, wood, solid v. laminated, 590. 

 Pimento fungus disease, 151. 

 Pine — 



as source of fiber and pulp, 828. 



bacterial tumers, studies, 552. 



blister rust. (Sec White pine blister 



rust.) 

 borer, ribbed, studies, N.Y.Cornell, 855. 

 jack, studies, U.S.D.A., 443. 

 maritime, disease of, 755. 

 plantation, fertilizer experiments, 24. 

 resin, usufruct of, 241. 

 rust, control, 755. 

 rust, transmission, 449. 

 Scots, growth as affected by locality, 

 748. 



