SUBJECT INDEX 



447 



Plant — Continued . 



physiology — continued. 



treatise, (27; 219; (31) 323 ; (32) 520; (33) 425; 

 (36) 429; (38) 728. 

 pigments — xpe also Piementation. 



bibliography, (32) 18. 



chemistry of, (33) 802. 



production, (33) 329; (34) 223. 



review of investigations, (34) 33. 



transformation, (36) 730. 

 poisons and stimulants, inorganic, investiga- 

 tions, (33) 327. 

 poisons, organic, (39) 224; (40) 520. 

 populations in Denmark, studies, (40) 832. 

 production, course of study, (40) 492. 

 products, analyses, (37) 114. 

 products, chemistry of, treatise, (31) 803; (37) 



801. 

 products, volatile, relation to sap flow, (27) 133. 

 propagation, (28) 193, 393; (35) 141, 642, 742. 

 propagation— 



and breeding, textbook, (37) 795. 



and pruning, (30j 236. 



by cutting, (34) 694. 



in Tropics, (39) 843. 



lessons on, (31) 394; (32) 898. 



treatise, (38; 539. 

 proteins, autolysis, (26) 801. 

 proteins, precipitation, (26) 482. 

 protoplasm, acidity, (37) 726. 

 protoplasm, relation to environment, (28) 326. 

 Quarantine KcX, notes, (27) 845; (29) 342. 

 quarantine in Porto Rico, (33) 441; (40) 844. 

 quarantine laws of Montana, (31) 648. 

 residues, humification, (36) 622. 

 residues, influence on nitrogen fixation and 



nitrate loss in soils. (40) 121. 

 root diseases in West Indies, (26) 245. 

 roots — see also Roots. 



acid excretion, (27) 514. 



and soil, medium of exchange between, (36) 

 128. 



assimilative power, (27) 514. 



effect on soil structure, (30) 120. 



effect on soils, (33) 216. 



excretion of, (26) 129. 



exosmosis from, (34) 826. 



normal behavior of, (31) 221. 



oxygen requirements, (38) 628. 



plant food set free by, (33) 325. 



relation to soil atmosphere, (36) 733. 



secretion of toxic substances by, (30) 522. 



secretions, (30) 228. 

 rusts, alternate hosts of, (26) 340. 

 smuts, life history and cytology, (26) 341. 

 species, relationships, (36) 221. 

 substances, poisoning of animals by, (26) 86. 

 succession — 



and evaporation, (39) 122. 



and evaporation in southeastern Washing- 

 ton and Idaho, (32) 626. 



evaporation and soil moisture in, (36) 144. 



in a ravine, (35) 27. 



in Colorado, (38) 23. 



in the thorn veld, (39) 525. 



monograph, (37) 434. 



notes, (37) 526. 



relation to soil moisture, (37) 418, 725. 



role of light in, (29) 218. 



studies, (32) 128; (36) 327. 



under irrigation, (35) 732. 

 tallows of East Indies, (32) 201. 

 tendrils and branch nodes, formation, (38) 822. 

 teratology, treatise, (36) 430. 

 tissues- 

 absorption of acids by, (36) 433. 



conduction in, (39) 121. 



detecting sugars in, (39) 27. 



determination of acidity in, (40) 223. 



eflect on fixation of atmospheric nitrogen, 

 (39) 26. 



freezing point determination, (38) 523. 



freezing point lowering, (36) 823; (37) 221. 



killing by low temperature, (32) 42; (35) 234. 



medium of exchange between, (36) 128. 



stimulation by Roentgen rays, (30) 729. 



survival after freezing, (31) 130. 

 trichomes, assimilation of atmospheric nitrogen 



by, (32) 327. 

 yields, relation to soil analyses, (26) 519. 

 yields, variation in, (28) 827. 



Plantago— 



alpina, analyses, (31) 863. 

 lanceolata, geographical distribution, (26) 335. 

 lanceolata, variation in, (39) 330. 

 psyllium in South Australia, (37) 542. 

 variegation in, (38) 731. 

 Plantain- 

 bacterial disease, notes, (37) 838. 

 black rot, notes, (36) 48. 

 culture experiments, (30) 229. 

 disease, notes, (33) 545. 

 diseases in India, (38) 351, 547. 

 diseases, notes, (39) 453. 

 meal, analyses, (40) 173. 

 recipes, (30) 165. 

 ripe rot, treatment, (37) 154. 

 water, delayed germination in, (31) 824. 

 wild, fiber from, (30) 38. 

 Plantains — 



as affected by top dressing, (26) 40. 

 fungus disease affecting, (26) 345. 

 insects affecting, (40) 453. 

 treatise, (26) 47. 



varieties for Philippines, (29) 839. 

 varieties in Seychelles, (29) 839. 

 Planting and harvesting dates, (40) 209. 

 Plants— 



abnormalities, (36) 734, 837. 

 abscission in, (36) 225. 

 absorption — 



and tolerance in bogs, (26) 821; (28) 733. 



and transpiration in, (26) 822. 



of boron, (39) 429. 



dextrose and levulose by, (27) 635. 



ions by, (33) 521. 



liquids by aerial parts, (35) 331; (36) 328. 



nitrogen by, (29) 732. 



nutritive substances by, (27) 826; (28) 



824; (32) 328; (35) 223. 

 ultraviolet rays, (39) 733. 

 water in, (28) 822. 

 acclimatization, (30) 328; (40) 523. 

 acclimatization by means of grafting, (35) 444. 

 acids and bases in, relation, (39) 224. 

 acridity in, (34) 731. 

 action of saline solutions on, (36) 224. 

 adaptation in, (26) 347; (37) 431, 725. 

 adjustment to desert habitat, (40) 129. 

 adsorption of nitrogen by, (29) 732. 

 alimentary and medicinal, tieatise, (34) 533. 

 alpine, change of habitat, (39) 730. 

 alpine, chemical biology, (36) 329. 

 alpine, osmotic values, (39) 223. 

 alteration and utilization of solar energy, (39) 



631. 

 alterations induced by ovarial treatments, (32) 



429. 

 ammonia formation in, (28) 328. 

 ammonia utilization by, (36) 631, 632. 

 ammonium salts utilization by, (27) 634; (29) 



133. 

 and bacteria, symbiosis between, (36) 632. 

 biocolloids, imbibition, (40) 29. 



external media, exchange between, (32) 625. 



soils, relationship, (28) 37, 718. 

 animals aflecting, (29) 547; (30) 349. 

 antagonistic salt action, (39) 630. 

 anthocyanin formation in, (27) 634; (28) 36; (29) 



421; (30) 129. 

 anthocyanin in, (33) 824; (37) 633; (39) 224. 

 aquiferous vessels in, (35) 224; (39) 826. 

 aromatic, culture, (33) 643. 

 arsenic content, (28) 526. 

 as affected by — 



acids, (37) 224. 



alkali salts, (28) 527. 



aluminum, (34) 525. 



antimoniacal salts, (33) 30. 



artificial closing of stomata, (35) 224. 



ashes, (32) 729. 



asphyxiating gas, (37) 153, 253. 



atmospheric electricity, (30) 430. 



bacteriotoxins, (28) 732. 



barium and strontium, (40) 819. 



basic compounds, (27) 229. 



bOateral Ulumination, (26) 824. 



centrifugal force, (35) 431. 



chemical fumes, (30) 432. 



chemicals, (30) 343. 



chlorids, (35) 423. 



chloroform, (28) 429. 



