INDEX. 



835 



Selenipedium, 587 

 Semecarpus, 319, 646 

 Sempervivum, 285 

 Senega, 456 



adulterants, 458 



allied plants, 457 



powder, 748 



root, 456 

 Senegin, 456 

 Senna, 607 



Aden, 610 



American, 610 



Arabian, 610 



Mecca, 610 



-nigrin, 609 



pods, 610 



powder, 721 



-rhamnetin, 609 

 Sepals, 129 

 Sequoia, 78 



Serenoa serrulata, 231 

 Sericeous, 210 

 Serjania, ^24 

 Serpentana, 501 



powder, 739 

 Serrate, 114 

 Sesamum, 377 

 Sessile, 106 

 Seven barks, 286 

 Sex cells, 45 

 Shaddock, 307 

 Shellac, 257, 324 

 Shepherd's purse, 



88, 284 

 Shoot, 92 



assimilation, 92 



hypogeous, 104 



kinds, loi 

 Shorea, 338 

 Shrubs, 409 

 Siabenzoresin, 673 

 Siaresinotannol, 673 

 Sida, 451 



species, 331 

 Sideroxylon, 359 

 Siejas, 259 

 Sieve, igi 

 plate, 191 

 tubes, igi 

 Sigillaria, 69 

 Silica, 13, 172 

 in diatoms, 14 

 in Equisetales, 64 

 Silique, 150 

 Silkworm, 257 

 Silphium, 400 

 Simaba, 310 



Simaruba, 310, 546 

 Simarubaceje, 309 

 Sinalbin, 428 

 Sinapine, 428 

 Sinapis alba, 

 283, 428, 742 

 adulterants, 428 

 powder, 741 



nigra; 429 

 allied products, 429 

 powder, 743 



root-hairs, 92 



species, 429 

 Sindor balsam, 337 

 Sinistrin, .511 

 Sinuate, 114 

 Sinus, 114 

 Sisymbrium, 283 

 Skullcap, 638, 639 

 Skunk cabbage, 234 

 Sleep movements, 117 

 Sloanea, 328 

 Sloe leaves, powder, 



719 

 Smilax species, 238 

 Smut, corn, 35 

 Smuts, 36 

 Snake poison, antidote, 



274, 349 

 Snakeroot, black, 497 



button-, 400 



Canada, 260 



Red River, 501 



Texas, 501 



Virginia, 501 

 Sneeze-weed, 401 

 Snow crystals, 171 

 Snow-ball, 382, 383 

 Snowberry, 385 

 Soap bark, 



powder, 782 

 Soapberry family, 324 

 Sodium chloride in ash, 



2^6, 28s, 338 

 Soil-bacterium,- 99 

 Solanaceae, 372 

 Solanine, 373, 375 

 Sblanum anther, 127 



carolinense, 374 

 powder, 726 



Dulcamara, 373 



species, 376 



tuberosum, 375 

 Solenostemma, 721 

 Solidago species, 399 

 Sorbitol, 288 

 Sorbus, 287 



Soredia, 40 

 Sorghum, 227 

 Sori, 59 

 Sorosis, 150 

 Sorrel, field, 264 



sheep, 264 

 Spanish needles, 155 



saffron, 241, 746 

 Sparteine, 637 

 Spartium, 637 

 Spathiflorse, 233 

 Spathyema, 234 

 Spawn, 31 

 Spearmint, 632 



stolons, 103 

 Species, 244 

 Sperm, 7 

 Spermolepis, 656 

 Spermophytes, 70 

 Sperms in Bryophytes, 

 48 • 



in Gymnosperms, 177 



in Lycopodiales, 68 

 Sphacelotoxin, 692 

 Sphaerobacteria, 44 

 Sphagnum, 49, 55 

 Sphere-crystalloids, 



167 

 Spice bush, 279 

 Spices, adulterants, 756 

 Spiderworts, 235 

 Spigelia, 503 



adulterant, 504 



marilandica, 362 



powder, 763 

 Spigeline, 504 

 Spike, 138 

 Spikelets, 225 

 Spikenard, 



American, 450 

 Spilanthes, 401 

 Spilanthin, 401 

 Spinach, 265 



fruit, 218 

 Spinose, 210 

 Spiny clotbur, 401 

 Spirsa, 290, 587 

 Spiral ducts, iqo 

 Spirogyra, 9, 10 

 Spleenwort, 61, 62 

 Spondias, 124 

 Sporangia in Angio- 

 sperms, 84 



mega-, 56 



micro-, 56 

 Sporangium, 6 

 Spore balls, 35 



