Minnesota Plant Life. 



Slime-mould spores, 28 



Slippery elm, 252 



Slitted puff-ball, 69 



Small burdock, 413 



cranberry, 356, 357 



yellow pond-lily, 266 



Smaller duckweed, 220 



Smallpox bacteria, 106 



Smartweed (Half-tone, 12), 



257, 258, 456 



dodder, 369 



Water-, 258, 448 



Smilax, 197, 226, 439, 503 



Smooth honeysuckle, 392 



-leafed dogwood, 428 



phlox, 369, 3/0 



yellow violet, 329 



Smut, 48, 49 



Sandbur, 48 



Corn cockle, 48 



Indian corn, 48 



Millet grass, 48 



Oat, 48 



Peat-moss, 49 



Sedge, 48 



Wheat, 48 



Wheat, Seed, 50 



Snakeroot, 307 



Distribution of fruit, 339 



Black, 338 



Button, 338 



Seneca, 307 



Seneca, Medicinal value, 307 



Snapdragon, 367, 379, 381 



Sneezeweed, 401 



Snow-on-the-mountain, 308 



plant, 442 



vegetation, 453 



Snowberry (Engr. 392), 



350, 357, 388, 391, 39^, 460 



Dwarf, 428 



Low, 392 



Soapwort, 263 



gentian, 363 



Soft maple (Half-tone, 452), 



313, 314, 502 



Soil, Relation of to plants, 437 



Sorrel, 258, 475 



True, 257 



Wood-, 305 



Wood-, Violet, 306 



Wood-, White, 306 



Wood-, Yellow, 306 



Sour raspberry, 291 



37 



561 



399, 402, 403 



91, 223, 438, 472 



217 



210 

 509 



379, 382, 475 

 5U, 520 

 520 



Sow-thistle, 



"Spanish moss," 



Spathe, 



Spear-grass, 



Species, definition of, 



Speedwell, 



Sperm, 



Spermary, 



Cone-headed liverwort, 136 



Spermatozoids, 505, 512, 520 



Directed toward eggs, 499 



Distribution, 520 



Production, 519 



Bass-weed, 38 



Fish-mould, 46 



Moss, 126 



Red algae, 40 



Sphere-alga, 37 



Sphere-alga, 37, 443, 520, 521 



Spice, 236 



-bush, 275 



Spider-flower, 275 



Spiderwort, 222 



Spikelet, Grass, 204 



Spikenard, 336, 337 



Spindle tree, 312 



Spine, 506 



Spiraea, 280, 286, 459 



Willow-leafed, 286 



Spleenwort, 165 



"Spontaneous combustion," 115 



Spools, Manufactured from 



birch, 247 

 Spore, 512, 513 



distinguished from seed, 183 

 distribution, 344, 514 

 distribution, Carrion-fungus, 66 



distribution, Earth-star, 69 



distribution, Morel, 75 



distribution, Moss, 153 

 Germination, 177, 518 



-mother-cell, 513 



Pollen, 517 



production, 513 



Beetle-fungus, 100 



Black mould, 44 



Club-moss. 159 



Cup-fungus, 77 



Fly-cholera fungus, 45 



Liverwort, 135 



Mushroom, Color, 65 



Peat-moss, 49 



Puff-ball, 68 



Puff-ball, Ball-tossing. 71 



Scouring-rush, 177 



