INDEX 



695 



Silk grass, 291. 



Silk-oak as a house plant, 129; for coffee shade, 243. 



Silk, printing, 272. 



SUk rubber, 558. 



Silo construction, 414, 415, 567. 



Silver bush, 80. 



Silver fir for tannin, 625. 



Silver-top, 455. 



Silver tree, 629. 



Silviculture defined, 312. 



Silybum Marianum (Fig. 148), 113. 



Simul-alu, 227.' 



Sinamay, 287. 



Singapore Botanic Gardens quoted, 554. 



Siphanta acuta in coffee, 244. 



Sisal, 281, 286-288; introduction, 72; notes, 9; forpaper, 

 504,509. 



Sitka spruce for tannin, 625. 



Skidder, steam, use in logging, 337. 



Skunks to destroy hop grub, 383. 



Slender fescue, 374. 



Slender saltbush, 565. 



Slender wheat-grass, 376, 452. 



Slime-molds, 392. 



Slingerlaxid, M. V., article by, 40. 



Slough-grass, 454, 455. 



Smallage, 268. 



Small-fruits, 277-279; handling, 356; picking, 355; 

 pruning, 351 ; rotation system for, 349; shipping, 357; 

 soil for, 275. 



Smartweed, 217, 628; in flax-fields, 299; seed notes, 141. 



Smilax, 7. 



Smith, C. B., article by, 235. 



Smith, H. W., article by, 388. 



Smith, Junius, quoted, 631. 



Smith, Landgrave Thomas, quoted, 534. 



Smooth brome-grass, 374, 375. 



Smooth sumac for tannin, 626. 



Smooth vetch, 658. 



Smut, 50; barley, 204; oat, 491, 492; rice, 537; rye, 563; 

 sorghum, 582; sugar-cane, 610; wheat, 670. 



Smyrna valonia, 625. 



Snail clover, 456. 



Snails on ginseng, destroying, 361. 



Snook, William, quoted, 637. 



Snoubar, 624. 



Snowball for farm garden, 274. 



Snowdrop for farm garden, 274. 



Snowflake for farm garden, 274. 



Snow-grass, 454. 



Snuff, 640, 641. 



Soapsuds spray for mealy bugs, 130. 



Societies of plants, 10. 



Soda, caustic, as an herbicide, 117, 118. 



Soda wood fiber for paper, 505. 



Sodium chlorid as an herbicide, 115. 



Soft com, 402. 



Soft rot, of carrot, 542, 550; ginseng, 361; sweet-pota- 

 toes, 622. 



Sohne quoted, 31, 34. . 



Soil, charging with electricity, 33; cleaning by crop 

 rotation, 86; conditions and handling in relation to 

 plant diseases, 47; for coniferous trees, 329; fertility, 

 relation of crop rotation to, 86; fertility, relation of 

 forage-cropping to, 305; for forests, 314, 320, 321; 

 improvement by cover-crops, 259; inoculation, 394; 

 management, 91, 92; moisture as affected by shading, 

 121. 122; rendering sterile, 115; rot, of sweet-pota^ 

 toes, 622. 



Soiling, 569-574; defined, 303. 



Soja bean. (See Soybean.) 



SolanacesE in its plant relations, 2. 



Solanum cardiophyllum, 519; Commersoni, 79, 519; 

 Jamesii, 519; Maglia, 519; oxycarpum, 519; tubero- 

 sum, 519. 

 Solidago (Fig. 158), 116. 

 Song-kou-Iong, 269. 

 Soorangee, 267. 

 Sophora Japonica, 270. 

 Sorbus Americana (Fig. 434), 317, 

 Sorbus Aucuparia, 629. 

 Sore-shin of cotton, 251, 252. 

 Sorgho, 576; red dye, 270. 



Sorghum, 366, 367, 574-582; amber, with cowpeas, 

 265, 266; in cotton-belt, 450; and cowpeas, for soil- 

 ing, 572, 573; as green-manure, 93; notes, 2; place in 

 rotation, 101, 102, 104, 105; in Plains region, 452; 

 planting dates, 138-140; and peas, seed per acre, 

 136; seed, legal weight, 151; seed notes, 133-136; si- 

 lage, 414; soiling, 570, 571, 573; syrup, 580-582: 

 yields, 153-155. 



Sorghum Halepense, 367. (See Johnson-grass.) 



Sorghum vulgare, 108, 109, 216, 217, 367, 384, 574. (See 

 Sorglium.) 



Sorrel, 217. 



Souchet, 270. 



Sour clover, 467. 



South Dakota, crop rotation systems in, 105. 



Sow-thistle, eradicating, 118. 



Soybean, 582-586; as cover-crop, 259, 260, 350, 351; 

 with cowpeas, 265; as green-manure plant, 93; place 

 in rotation, 101, 102, 104; planting dates, 1.38-140; in 

 relation to soil-inoculation, 394; root-tubercles, 392; 

 seed notes, 132, 133, 136; silage, 414, 415; soiling, 570, 

 571; weight, legal, 149; yields, 153-155. 



Spaghetti, 665. 



Spanish berries, 270. 



Spanish chestnut for tannin, 626. 



Spanish clover, 309. 



Spanish trefoil for dye, 270. 



Sparrows, protecting tree seedlings from, 330. 



Spearmint, 457; for oil, 495, 497. 



Species, explained, 2; number, 3, 4. 



Spelt, 663, 664; legal weight, 148. 



Spergula arvensis, 587. 



Spergula maxima, 588. 



Spesohnew quoted, 31. 



Sphserotheca castagnei on hops, 383. 



Spice-producing plants, 586, 587. 



Spider, red, 130. (See Red spider.) 



Spike, importations, 496. 



Spillman, W. J., articles by, 442, 638. 



Spilosoma Virginica, 586. 



Spiltz. (See Spelt.) 



Spinach, 280; for canning, 160; for dye, 270; effect of 

 acetylene light, 25; electric incandescent light, 24; 

 electric light, 23 ; electricity, 30, 31 ; incandescent gas 

 light, 26; place in rotation, 105; seed notes, 133; 

 weight, legal, 148. 



Spinacia oleracea. (See Spinach.) 



Spindle, mitotic, 11. 



Spiny salt sage, 565. 



Spireas for farm garden, 274. 



Split peas, 510. 



Sponge mushroom, 479. 



Spore-bearing plants, 2. 



Spores, 19. 



Sporobolus Lindleyi, 79. 



Sports, defined, 54; importance, 58. 



Spotted clover, 456. 



Spray, distillate, formula, 38. 



Spraying, to destroy weeds, 111; machinery, 45, 46; for 

 plant diseases, 50, 51. 



Spring tare, 658. 



Spring vetch. (See Vetch.) 



Sprout-lands, 313. 



Spruce, 316, 327; black (Fig. 457), 322; in Canada, 319; 

 diseases, 345; nitrogen requirements, 320; Norway, 

 327, 329; notes, 2; for paper, 503, 505, 607, 509; rei 

 generation, 325, 326; Sitka, for tannin, 625; tolerant 

 character, 323; white, 327. 



Spurge family, medicinal plants in, 457. 



Spurge, treatment with copper sulfate, 118. 



Spurred rye, 563. 



Spurry, 587, 588; as cover-crop, 259; seed notes, 133. 

 136. 



Square-pod pea, 310. 



Squash, 529, 530; bug, 529; for canning, 160; diseases, 

 51; in farm garden, 279, 280; insect control, 42, 43; 

 notes, 4, 7, 12, 16; place in rotation, 102; planting 

 dates, 138-140; seed-growing, 145, 146: seed notes, 

 132, 133. 

 Squaw corn (Fig. 604), 401. 

 Squirrel-tail grass, 455. 

 St. Augustine grass, 369, 450. 

 St. Martha wood, 269. 



