SUBJECT INDEX 



33 



Ammonia — Continued, 

 distillation- 

 aeration method, (36) 504. 



from water, (36) 15. 



scrubber for, (40) 806. 

 effect on— 



oviposition of house fly, (38) 563. 



peroxidase, (29) 202. 

 electrical synthesis, (32) 33. 

 electrotechnical production, (29) 24. 

 elimination in urine during rest, (35) 863. 

 evaporation— 



and transformation in cells, (26) 525. 



from soils, (30) 425. 

 excretion — 



as affected by water drinliing, (34) 763. 



during fasting, (30) 764. 



from soil, (40) 203. 

 fixation — 



by cell albumin, (34) 30. 



in manure, (32) 819. 



in soils, (37) 318. 

 formation — 



and use in killed plants, (28) 327. 



by mold fungi, (28) 803. 



from cyanamid, (38) 516. 



in higher 'plants, (28) 328. 



in soil as affected by salts, (39) 218. 



in soils, (27) 721. 



organic nitrogen in, (32) 818. 



from aluminum nitrid, (32) 125. 

 gas as a fumigant, (31) 256. 

 gas, effect on anunnls, (26) 373. 

 in canned sardines, (40) 411. 

 dew, (37) 116. 

 diseased plants, (37) 549. 

 peats and humus soils, (36) 612. 

 rain and snow of South Polar region, (26) 515. 

 rainwater, (40) 809. 

 soil as affected by heat, (39) 617. 

 stomach and intestines on vegetable diet, (36) 



664. 

 loss from manured soils, (31) 421. 

 loss from soils, (27) 21. 

 manufacture, (28) 424, 723; (30) 427, 721. 

 manufacture — 



from the air, (29) 822. 



methods, (27) 520. 



Serpek method, (31) 518. 

 metabolism, relation to acid and base-forming 



elements in foods, (26) 158. 

 methods of analysis, (27) 609. 

 nesslerization in urine, (39) 111. 

 nitric acid from, (29) 517. 



origin and significance in portal blood, (26) 870. 

 oxidation, (38) 311, 710; (40) 815. 

 oxidation in plants, (34) 627. 

 physical and chemical data, (40) 607. 

 production in United States, (28) 522. 

 protein, determination in water, (33) 501. 

 retention by soils, (36) 299. 

 salt, effect on nitrogen retention in goats, (32) 



261. 

 separation from pyridin, (26) 709. 

 solutions, effect on saccharin substances, (26) 



307. 

 sources in soils, (29) 723. 

 "superphosphate of," (40) 127. 

 synthesis — 



at high temperatures, (39) 817. 



Haber process, (38) 423. 

 synthetic- 

 manufacture and use, (35) 428. 



manufacture, progress in, (29) 730. 



preparation, (28) 222; (29) 127. 

 tablet, reagents for, (26) 608. 

 titrations, indicators for, (38) 311. 

 utilization— 



by com plantlets, (27) 634. 



by pea seedlings, (27) 730. 



in protein metabolism, (29) 365. 

 Ammoniacal— 



nitrogen, fertilizing value, (39) 726. 

 salts, adding to diet, (34) 762. 

 salts, effect on saccharification of starch, (26) 

 309. 



52831— 26t 3 



.\mmoniates, fertUizing value, (28) 724. 

 Ammonifi cation — 

 as affected by — 



alkali salts, (26) 322; (39) 721. 



alkali salts and calcium carbonate, (39) 721 



carbon dioxid gas, (39) 618. 



digestion of soils, (28) 121. 



humus-forming materials, (35) 216. 



irrigation, (31) 24. 



lime-magnesia ratio, (32) 720. 



liming, (26) 428. 



manganese salts, (37) 126. 



metallic salts, (31) 120. 



soil temperatures, (29) 317. 



sulphur, (40) 128. 



various salts, (39) 323. 

 as criterion for measuring soil fertOity, (35) 25. 

 in Hawaiian soils, (32) 719. 

 in Nebraska soils, (29) 734. 

 in soils, (26) 721; (31) 317, 420, 818; (33) 808; (35) 



729; (36) 513, 724. 

 in soils— 



and solutions, (30) 218; (31) 420. 



as affected by arsenic, (30) 423, 424. 



as affected by sulphur, (31) 125. 



methods of studying, (36) 214. 



nature, (36) 513; (38) 621. 



studies, (27) 517; (29) 21; (34) 127, 619. 

 inhibition by alkali salts, (28) 719. 

 of green manures, (33) 514. 

 relation to availabOity of nitrogenous mate- 

 rials, (26) 124. 

 relation to osmotic pressure, (39) 323. 

 relation to temperature, (31) 127. 

 seasonal variation, (32) 514. 

 studies, (28) 718, 719; (39) 324. 

 studies with soil fungi, (32) 817. 

 Ammonium — 



acetate, effect on milk production and quality, 



(26) 476. 

 bicarbonate, fertilizing value, (35) 325, 518. 

 carbonate- 

 effect on determination of humus, (31) 111 . 



effect on germination and growth of crops 

 (34) 125. 



fertilizing value, (35) 126, 218, 519. 



utilization by soO fungi, (39) 623. 

 chlorid — 



absorption by plants, (35) 435. 



as source of nitrogen for the body, (30) 65. 

 chlorid, effect on — 



ferric and aluminum hydroxids during igni- 

 tion, (34) 205. 



germination of seeds, (29) 328. 



plants and microorganisms, (27) 229. 



solubility of sulphates, (28) 818. 

 chlorid— 



fertilizing value, (35) 126, 218, 325, 427, 518. 



hydrolysis of sugar cane by, (30) 811. 

 citrate- 

 effect on phosphates, (31) 125. 



solubility of calcium phosphates in, (33) 412. 

 citrate solution — 



apparatus for preparing, (27) 8. 



neutral, notes, (28) 19. 



neutral, preparation, (26) 709; (27) 110; (28) 

 312; (29) 203, 718; (31) 410. 



preparation, (32) 116, 804; (38) 205. 

 compounds — 



assimilation by streptothrix, (27) 621. 



effect on baking quality of flour, (30) 555. 



of fatty acids, properties, (26) 23. 



stereochemistry and biological action, (35) 

 435. 

 humate as a source of nitrogen for plants, (30) 



721. 

 hydroxid, use in extraction of rosin, (34) 412. 

 magnesium phosphate — 



from urine, (40) 320. 



precipitation in presence of ammonium 

 citrate, (32) 804. 

 nitrate, displacement of potash by, (37) 321. 



