SUBJECT INDEX 



459 



Potash— Continued. 



from hedge clippings and trimmings, (32) 218. 

 hemp pulp, (40) 629. 

 incinerator ash, (37) 722. 

 Italian leueitic lavas, (39) 219. 

 kelp, (31) 823; (32) 723, 821; (35) 327; (39) 



204, 220, 521; (40) 128. 

 marsh plants, (38) 520. 

 mica, (27) 520. 

 Nebraska lakes, (37) 322. 

 olive-oil residue, (40) 26. 

 Pinus insignis, (40) 321. 

 rapakivi and pegmatite granites, (27) 127. 

 sawmill waste, (33) 819. 

 Searles Lake, (40) 128. 

 sea-water bittern, (39) 328. 

 seaweed, (27) 724; (28) 522; (29) 128; (34) 



26. 

 silicates, (27) 724; (29) 215, 518, 822. 

 sunflower stems, (38) 207; (40) 242. 

 water hvacinth, (.39) 523; (40) 347. 

 wood and plant ashes, (34) 425; (37) 427. 

 wood ashes, (40) 320. 

 German and other sources, (35) 24. 

 growing crops without, (39) 334. 

 growing wheat without, (40) 134. 

 imports and use in United States, (31) 321. 

 imports from Germany, (32) 517. 

 in banana stalks and skins, analyses, (36) 123. 

 common soil-forming mmerals, (39) 728. 

 granitic soils, (32) 126. 

 loess soils, (35) 809. 

 soils, liberation, (34) 519. 

 soils, solubility, (39) 821. 

 tropical agriculture, (35) 126. 

 industrj^ — 



in America, development, (37) 818. 

 Austria-Hungary, (33) 822. 

 California, (33) 819. 

 Germany, (26) 526; (27) 691; (30) 428; 



(33) 518. 

 1913, (32) 218. 

 United States, (36) 820. 

 Upper Alsace, (30) 724. 

 treatise, (26) 316. 

 lakes and deposits as a source of potash, (34) 327. 

 lime, fertilizing value, (26) 526; (32) 218. 

 lime, preparation and use, (27) 326. 

 long-continued use, (34) 128. 

 loss by leaching, (33) 122. 

 loss from manure, (32) 818. 

 loss from soils, (27) 321; (29) 211; (35) 812. 

 loss in drainage water, (26) 422, 620. 

 loss in industrial wastes, (37) 6.30. 

 methods of analysis, (28) 709. 

 mica, decomposition bj' soil bacteria and yeast, 



(31) 121. 



mica, fertilizing value, (28) 33. 



mineral sources, (26) 425; (36) 728. 



minerals, fertilizing value, (27) 724; (29) 625. 



minerals in soils, (31) 720. 



mines and works of Alsace, (40) 128. 



minimum, for plant growth, (29) 22. 



natural and domestic sources, (34) 519. 



of feeding stufTs, digestibility, (40) 769. 



of silicates, solubility, (34) 328. 



of soils, studies, (27; 323, 520; (28) 29. 



phosphate fertilizers, Schroder's, tests, (38) 520. 



phosphoric acid fertilizer, new, (38) 519, 726. 



production — 



from sugar beets, (26) 613. 

 in California, (40) 725. 



Nebraska, (40) 320. 



1917, (39) 824; (40) 725. 



United States, (36) 26; (38) 326, 424; (39 

 120; (40) 26, 516, 517. 

 relation to grape chlorosis, (26) 344. 

 relation to yellow-berry in wheat, (33) 42. 

 removal by corn crop, (37) 232. 

 replacement bv soda as a fertilizer for sugar 



beets, (32; 230,324. 

 replacement in Feldspar, (30) 126. 

 requirements of nitrogen bacteria, (27) 226. 

 residue from oxvgen-acetylene plant, analyses, 



(32) 424. 



residues in Hagerstown soil, condition, (40) 25. 



Potash — Continued. 



resources and use in New Zealand, (37) 218, 629, 



817. 

 resources of Australia, (37) 322. 

 resources of United States, (37) 522. 

 role in plant nutrition, (26) 530. 

 salts — see also Potassium salts. 



absorption by plant leaves, (27) 324. 



analyses and tests, (37) 322. 



as affected by phosphatic slag, (28) 508. 



as protection against frost, (27) 421. 



drilling v. broadcasting, (31) 123. 

 salts, effect on— 



action of phosphoric acid, (27) 623. 



asparagus roots, (28) 236. 



burning quality of tobacco, (38) 140, 239; 

 (39) 34. 



disease susceptibility in cereals, (29) 844. 



germination of seeds, (29) 328. 



soils, (26) 216. 

 salts- 

 extraction, (27) 22. 



fertilizing value, (27) 125, 234, 725; (30) 221; 

 (34) 519. 



for meadow soils, (34) 22. 



imports into United States, (31) 726; (32) 

 723; (33) 625. 



in sugar beets, studies, (31) 325. 



of United States, (27) 23. 

 salts, production — 



and use, (27) 327; (3.3) 218, 219. 



and use in 1911, (29) 213. 



and use in 1913, (32) 126, 425. 



in Germany in 1912, (29) 128. 



in 1915-16, (37) 523. 

 salts — 



replacing with sodium chlorid, (34) 726. 



sources and production, (35) 23. 



substitution for common salt in nephritis, 

 (29) 167. 

 ■ trade in, (31) 29. 



Wittelsheimer, composition and use, (31) 

 519. 

 scarcity, relation to cotton yields, (40) 335. 

 search in America, (26) 526. 

 soil, utilizing, (40) 300. 

 solubility— 



as affected by bacteria, (29) 315. 



as affected by gypsum, (39) 521. 



in mixed fertilizers, (31) 207. 



in muscovite, (40) 812. 

 sources, (30) 27; (34) 327; (36) 624; (39) 219, 327, 



429, 430, 724, 727, 824; (40) 422. 

 sources in America, (34) 821. 

 sources in Great Britain, (32) 218. 

 sources in United States, (29) 419; (31) 321; (36) 



26, 124. 

 spring application, (33) 625. 

 statistics for 1914, (31) 30. 

 substitutes for, (34) 327. 

 supplies of Great Britain during the war,J(35} 



126. 

 supply, (34) 494. 



supply, German and other sources, (32) 820. 

 supply in United States, (32) 126. 

 use in agriculture, (34) 27. 



in Germany, (28) 720; (36) 726. 



in 1911, (27) 727; (28) 626. 



on cotton, corn, and potatoes, (40) 516. 



on moor soils, (38) 132. 



on pastures, (26) 437. 

 V. phosphate fertilizers, (40) 824. 

 V. sodium for sugar beets, (33) 135. 

 waste liquor lime, fertilizing value, (34) 26. 

 works waste products, fertilizing .value, (34) 



328. e ^^'<».».'K4 



works waste water for irrigation,.(35).637. 

 world's supply, (34) 724. 

 world-wide search for, (31) 323. 

 Potassic— 



rocks, utilization, (32) 324. 

 superphosphate, fertilizing value, (26) 231;. (27) 

 530. 

 Potassium— , „ ,• 



acid phthalate in acidimetry and alkalimetry, 



(34) 408. 

 adsorption by soils, (34) 817. 

 aluminum sulphate, fertilizing value, (37) o27 . 



