544 



Minnesota Plant Life. 



Indian reservations, 



rice (see wild rice), 



tobacco, 



tobacco lobelia. 



turnip, 217, 



uses, Birch-bark, 

 Indigo-plant, 



False, 

 Infectious diseases, 

 Inoculation, 

 Insect pollination of orchids. 



pollination of pipe-vine. 

 Insects, 



Instinct of self-preservation. 

 International boundary, 



281, 309, 222, 356. 357, 

 Interrupted fern, 

 Introduced plants. 

 Invasive diseases, 

 Involucre, 



Burdock, 



Cocklebur, 

 Involucred honeysuckle. 

 Iodine, Manufactured from algae. 

 Iris (See blue flag), 220, 



Iron, 



bacteria, 



bacteria and iron ores. 



oxide, Extraction by algae, 

 Ironweed, 401, 



Ironwood (Half-tone, 245), 245, 

 Irritable behavior, Living sub- 

 stance, 



behavior. Plant organs. 

 Irritability. 488, 



Islands in Lake of the Woods 

 (Half-tone), 7, 



in Mississippi river (Half- 

 tone), 

 Isle Royale, 

 Ivy. 432, 



Poison (Engr. 311), 



309. 310. 311. 



-leaved duckweed (See three- 

 cornered duckweed). 

 Jack-in-the-pulpit (Half-tone, 

 431), 197,217,218,219.450, 



Leaves. 



Parasitic alga. 

 Tack-pine, 186, 



Jack-pine-barrcn. 



Economic importance. 

 Jasmine. 



379 

 205 

 407 

 398 

 300 

 247 

 280 

 297 

 106 

 107 

 229 



257 



20 



510 



362 



164 



II 



106 



399 

 399 

 399 

 393 



41 

 224 

 102 

 102 

 120 



30 

 405 

 246 



498 

 500 

 497 



468 



14 

 329 

 502 



506 



220 



479 

 430 

 2,7 

 470 

 470 

 190 

 360 



