SUBJECT INDEX 



569 



Sulphurous— Continued. 



anhydrid, toxicity toward olive blooms, (33) 

 447. 

 Sultanas, drying, (37) 114. 

 Sumac — 



as source of tannin, (37) 548. 

 destruction, (26) 334. 

 Indian, notco, (3.5) 317. 

 industry in America, (39) 752. 

 poison, pollen of, (31) 280. 

 smooth, notes, (30) 145. 

 Summer — 



grass, analyses. (27) 68. 

 sore in horses, notes, (26) 482. 

 sores, etiology and treatment, (40) 586. 

 Summers — 



American, classification, (34) 118. 

 classification, (32) 810. 

 warm and cold, (40) 716. 

 Sun— 



as fo2 producer, (29) 721, 

 Brester's theory, (38) 511. 

 power plant in Egypt, (31) 688. 

 power plant, notes, (30) 890. 

 power plants, steam engines for, (29) 787. 

 spot frequencies, (34) 117. 

 spot numbers, Wolf-Wolfer system, (29) 721. 

 spots- 

 effect on tree growth, (38) 415. 

 magnetic storms, and rainfall, (38) 811. 

 periodicity, (38) 812. 

 relation to climate, (28) 211; (38) 114; (40) 



416. 

 relation to weather, (27) 718: (37) 619. 

 temperature and radiation of, (36) 419. 

 Sundri timber, notes, (34) 240. 

 Sunflower — 



artichoke grafts, studies, (39) 645. 

 cake, analyses, (26) 165, 369. 

 cake, digestibility, (28) 464. 

 fly, notes, (40) 169. 

 pith and stems, utilization, (38) 207. 

 seed, amino acid in, (33) 665. 

 seed, analyses, (31) 834. 

 seed cake — 



acidity, (32) 259; (35) 770. 



analyses, (29) 467; (30) 267, 268; (31) 467; (33) 



170. 

 elTect on milk and butter, (34) 570. 

 effect on milk production and (luality, (26) 



476. 

 for cows, (29) 577. 

 seed- 

 distribution of nitrogen in, (36) 269. 

 meal, analyses, (30) 268; (31) 864; (33) 870. 

 oil, analyses, (36) 803. 

 oil, detection, (29) 613. 

 Swedish, studies, (40) 533. 



betains In, (27) 203. 

 formation of oil in, (32) 427. 

 precipitating serum from protein of, (28) 

 801. 



analyses and use, (40) 470. 

 for cows, (39) 182. 

 notes, (37) 230. 

 studies, (40) 331. 

 stems, utihzation, (40) 242. 

 Sunflowers- 

 analyses, (27) 68. 



as affected by lithium salts, (28) 526. 

 forage crop, (40) 242. 

 silage crop, (38) 74; (40) 332, 431. 

 soiling and silage crop, (40) 429. 

 source of potash, (38) 207. 

 culture, (31) 834. 

 culture- 



and use, (27) 68. 



experiments, (35) 228; (37) 332, 730; (39) 437, 



835; f40) 230. 

 for chicken feed, (38) 827. 

 for oil, (28) 434. 

 for seed, (37) 230. 

 on moorland, (30) 229. 

 under dry farming, (30) 435. 

 elongation of hypocotyl, (28) 39, 739. 

 fertilizer experiments, (26) 129; (36) 026. 

 for dairy cows, (38) 369. 

 forcing with radium, (28) 826. 



Suunowers— Continued . 

 forms of, (30) 140. 

 germination as affected by depth of planting, 



(36) 438. 

 germination studies, (28) 225. 

 glucosid in, (32) 713. 

 growth in, (33) 28. 

 growth on calcareous soils, (31) 816. 

 hybrid, (40) 728. 



insects affecting, (31) 548; (34) 450. 

 marking factors in, (34) 341. 

 phyllota.xy of, (28) 739 

 pollination by bees, (32) 556. 

 red, notes, (26) 840. 

 resistance to cold, (39) 525. 

 root systems of, (31) 515. 

 Russian, as silage crop, (39) 134. 

 Russian, breeding experiments, (27) 741. 

 sclerotinia diseases, (40) 49. 

 specific and varietal characters in, (34) 237. 

 studies, (32) 831. 

 variations in, (37) 543. 



varieties, (27) 736; (31) 829; (33) 527; (37) 339. 

 varieties resistant to Orobanche cumana, 



(29) 851. 

 water requirement, (32) 127; (35) 823. 

 yields of stover, (40) 731. 

 Sunlight — 



actinic power, (29) 212. 



and moonlight, relation, (38) 811. 



elTeet on — 



color of ap"\3les, f28) 145. 



composition of leaves, (35) 333. 



composition of wheat, (29) 834. 



flower color, (34) 237. 



germination of seeds, (28) 327. 



osmotic pressure of leaves, (27) 631. 



plant acids, (.30) 431. 



plant assimilation, (29) 26. 

 formation of nitrites by, in aciueous solution, 



(40) 425. 

 measuring Vvith photometer, (39) 524. 

 photochemical e fleets from, (29) 218. 

 relation to lespintory activity, (34) 30. 

 synthesis by, (30) 129. 

 Sunrise and temperature minimum, difference in 



time, (40) 314. 

 Sun's— 



atmosphere, eonvectio7i in, (35) 419. 



rays, absorption and ulilization of energy from 



by animals, (31) 061. 

 rays, distribution in forests, (30) 45. 

 Sunshine — 



elTeet on protein content of wheat, (30) 836. 

 intensity, method for approximating, (38) 629. 

 measurement, (,33) 717. 

 recorders, comparison, (38) 210. 

 Superior Council of Agronomic Stations and Labo- 

 ratories in France, (40) 99. 

 Superphosphate- 

 addition to barnyard manure, (33) 829. 

 analyses, (28) 627; (39) 222. 

 as afiectBd by^ 



ammonium sulphate, (28) 818. 



calcium carbonate, (26) 428; (35) 816; (36) 

 325. 



calcium cyanamid, (30) 26; (33) 25. 



crumbing, (30) 722. 



gaseous ammonia, (35) 519. 



ground oyster shells, (36) 821. 



liming, (39) 119. 

 as preservative for liquid manure, (31) 422. 

 as winter spray for fruits, (30) 641. 

 double, fertilizing value, (34) 35. 

 double, preparation, (29) 319; (33) 220. 

 drilling v. broadcasting, (31) 123. 

 effect on — 



asparagus roots, (28) 236. 



availabihty of soil potash, (32) 126. 



carnations, (30) 440. 



composition of cereals, (37) 827. 



composition of grasses, (32) 665. 



composition of prairie grass, (31) 864. 



composition of turnips, (26) 527; (29) 418. 



decomposition of green manure, (31) V2. 



decomposition of soy bean fodder, (40) 214. 



fermentation of manure, (38) 19. 



germinatiou of seeds, (29) 328; (31) 729. 



germination of wheat, (27) 840. 



Tl-ion concentration in .soils, (39) 425. 



