GENERAL INDEX. 



605 



Silk Tree, 547 



Silpbium, 70, 71, 103, 132, 156, 



159, 515 



Silver-Bell Tree, 505 

 Silver Fir, 412 

 Silver Poplar, 173 

 Silver Tree, 491 

 Simaruba, 540 

 Siruaruba Bark, 540 

 Simarubaceae, 540 

 Simple Leaf, 147 

 Simple Pistil, 433 

 Simultaneous Division, 49 

 Single Cells, 65 

 Siphonaceae, 339 

 Siphonese, 340 

 Sirurella, 231 

 Sirurelleae, 231 

 Sisymbrium, 98 

 Size of Cells, 16 

 Size of Leaves, 146 

 Skimmia, 542 

 Skunk Cabbage, 462 

 Sleep of Plants, 198 

 Slime Moulds, 6, 170, 188, 207 

 Slippery Elm, 488 

 Sloanea, 545 

 Slough Grass, 455 

 Smart weed, 497 

 Smilacina, 428 

 Smilax, 459, 460 

 Smut, 318, 323 

 Snakewood, 490 

 Snapdragon, 500 

 Sueezewood Tree, 535 

 Snowball, 518 

 Snow berries, 518 

 Snowdrop, 468 

 Snowdrop Tree, 505 

 Snow flake, 468 

 Snow Plant, 511 

 Soap Bark, 529 

 Soda Salts, 176 

 Sodium, 175 

 Soft Bast, 116 

 Solanacese, 71, 425, 500 

 Solan urn, 11, 102, 500 

 Solidago, 516 



Solitary Axillary Inflorescence, 428 

 Solitary Spores, 319 

 Solitary Terminal Inflorescence, 



429 



Sollya, 551 

 Solorina. 309 



Solutions, 174 



Sonneratia. 523 



Sophora, 532 



Soredia, 305 



Sorghum, 457 



Sorisporium, 319 



Sorrel, 497, 542 



Sorosis, 437 



Sorus (pi sori), 313, 374 



Sour Gum, 519 



Sour Sop, 561 



Soy, 532 



Spadix, 428 



Spanish Bayonet, 461 



Spanish Chestnut, 478 



Spanish Needles, 515 



Sparganium, 462 



Speerschneidera, 309 



Spergula, 550 



Spermagonium (pi. a), 293, 298, 



312 

 Spermatium(pl. a), 293, 299, 312, 



315, 323, 330 

 Spermatozoids, 45. 46, 243, 267, 



271, 330, 332,341. 362 

 Sperjn Cells, 341, 362. 

 Sphacelariaceae, 339 

 Sphacelia, 289 

 Splueria, 292, 294, 295 

 Sphaeriaceae, 339 

 Sphserobacteria, 213 

 Sphaerococcaceae, 339 

 Sphaerococcites, 278 

 Sphaerococcoidese, 277, 278 

 Sphaerophorei, 310 

 Sphaerophorus, 301, 310 

 Splueroplea, 245, 247 

 Sphaeropleaceae, 339 

 Sphaerotheca, 281,283 

 Sphagnaceae, 352, 355, 356, 357 

 Sphagnum, 351, 357, 358 

 Sphenophylluin, 368 

 Spheroidal cell, 19 

 Spicules, 324 

 Spiderwort, 457 

 Spike, 395, 428 

 Spinach, 495 

 Spmacia, 495 

 Spines, 136 

 Spiraea, 529 

 Spiraeeae, 529 

 Spirals, 28 



Spiral Vessels, 82, 85, 108, 363 

 Spiranthes, 470 



