GENEUAL INDEX. 



605 



Silk Tree, 547 



Silphium, 70, 71, 103, 132, 156, 



159, 515 

 Silver-Bell Tree, 505 

 Silver Fir, 413 

 Silver Poplar, -173 

 Silver Tree, 491 

 Simaruba, 540 

 Simaruba Bark, 540 

 Simarubacese, 540 

 Simple Leaf, 147 

 Simple Pistil, 433 

 Simultaneous Division, 49 

 Single Cells, 65 

 Siplionacese, 339 

 SipUonese, 840 

 Sirurella, 231 

 Sirurellese, 231 

 Sisymbrium, 98 

 Size of Cells, 16 

 Size of Leaves, 146 

 Skim ml a, 542 

 Skunk Cabbage, 463 

 Sleep of Plants, 198 

 Slime Moulds, 6, 170, 188, 307 

 Slippery Elm, 488 

 Sloanea, 545 

 Slough Grass, 455 

 Smartweed, 497 

 Smilaeina, 438 

 Smilax, 459, 460 

 Smut, 318, 323 

 Snakewood, 490 

 Snapdragon, 500 

 Sneeze wood 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 

 SolanacesB, 71, 425, 500 

 Solanum, 11, 103, 500 

 Soli dago, 516 



S')litary Axillary Inflorescence, 428 

 Solitary Spores, 319 

 Solitary Terminal Inflorescence, 



439 

 Sollya, 551 

 Solorina, 309 



Solutions, 174 



Sonneratia, 533 



Sophora, 532 



Soredia, 305 



Sorghum, 457 



Sorisporium, 319 



Sorrel, 497, 543 



Sorosis, 437 



Sorus (pi.— sori), 813, 874 



Sour Gum, 519 



Sour Sop, 561 



Soy, 533 



Spadix, 428 



Spanish Bayonet, 461 



Spanish Chestnut, 478 



Spanish Needles, 515 



Spargauium, 463 



Speerschneidera, 309 



Spergula, 550 



Spermagonium (pi.— a), 298, 298, 



812 

 Spermatium (pi.— a), 293, 299, 313, 



315, 333, 330 

 Spermatozoids, 45, 46, 243, 367, 



371, 330, 832,341, 362 

 Sperm Cells, 841, 863. 

 Sphacelariaceae, 339 

 Sohacelia, 389 

 Sphaeria, 292, 294, 295 

 Sphseriaceae, 839 

 Sphserobacteria, 313 

 Sphaerococcaceae, 339 

 SpliEerococcites, 278 

 Sphserococcoidese, 277, 378 

 Sphserophorei, 310 

 Sphserophorus, 301, 310 

 Sphaeroplea, 245, 247 

 Sphaeropleacese, 339 

 Sphaerotheca, 281,283 

 Sphagnace^, 3S2, 355, 356, 357 

 Sphagnum, 351, 357, 358 

 Sphenophyllum, 368 

 Spheroidal cell, 19 ' 

 Spicules, 324 

 Spiderwort, 457 

 Spike, 395, 428 

 Spinach, 495 

 Spinacia, 495 

 Spines, 136 

 Spiraea, 529 

 SpiraeesB, 529 

 Spirals, 28 



Spiral Vessels, 83, 85, 108, 363 

 Spiranthes, 470 



