Inde 



Absinthe, 411 



Acacia, 280 



flower, 348 



Acacia, False, 301 



Acanthus, 367 



Acetic acid ferments, Bacteria 



producing, 114 



Acid, 506 



Prussic, 292 



Aconite, 264 



Aconite (poison), 273 



Adder's-tongue, 161 



Adoxa, 388, 393 



Age of lichens, 96 



Agrimony, 290 



Ailanthus, 305 



Air chamber, Bladderwort, 443 



Bulrush, 455 



Duckweed, 443 



Liverwort, 135 



Quillwort, 163 



Sedge, 455 



Air plant, 472, 481, 489 



pore, 435 



Aitkin county, 309 



Albumen, 524 



Definition of. 183 



Alcoholic fermentation, 73 



Bacteria of, 102 



Alder, 245, 249, 462 



Bacterial nodules, 119 



Witches'-broom on, 74 



Alder, Black, 249, 312 



Dwarf, 319 



Green, 249 



June-berry, 287 



Tag, 246, 460 



-leafed buckthorn, 319 



Aleurone grains, 491 



Alfalfa, 298 



Bacterial nodules, 118 



Algae, 29, 448, 472, 489, 512, 519 



Deep water, 453 



Economic importance of, 41 



Algae. Fertilizing material, 41 



General remarks, 41 



Groups, 29 



Iodine, 41 



in leaves of floating-fern, 169 



Limestone formation, 30 



encrusted with lime (Half- 

 tone), 31 

 in tank, Lime-encrusting 



(Half-tone), 35 



Lichens, 93 



Marine, 39, 40 



Noxious, 41 



Number in Minnesota, 27 



Nutrition, 48 



Oldest kinds of plants, 42 



Originators of all other plants, 42 

 Origin of higher plants from, 196 

 Parasitic on Jack-in-the-Pulpit, 37 

 Pig-pen odor, 41 



Poisonous, 41 



Silica formation, 31, 41 



Sinter formation, 31 



Travertine formation, 31 



Algae, Blue-green, 



26, 29, 424, 443, 446, 453 

 Bright-green, 29, 446, 522 



Brown, 29, 39, 513, 520 



Deep water, 453 



Flower-pot, 35 



Hot spring, 31 



Leaf-dwelling, 37 



Lime-secreting, 41 



Red, 29,39,40,446,513,520 



Rolling, 34 



Rock, 467 



Rock-forming, 30 



Silica-secreting, 41 



Skin, 32 



Sphere, 37, 520, 521 



Warm water, 42 



Algal fungi, 43 



parasites, 45 



plankton, 443 



Alkali-grass, 226 



