644 



Index 



Danthonia spicata, 579, 595- 

 Daphnia. 487. 

 Darter, Johnny. 521. 



Rainbow, 523. 

 Dasiphora fruticosa, 360. 

 Decodon verticillatiis, 578, 604. 

 Delphinium penardi, 60, 63. 156. 

 Dero furcata, 513, 517. 

 Desmodiiim grandiilornm, 134, 15Q. 



illinoense, 75, i-'6, 15Q. 305» 3^^< 337' 

 3+2' 361. 

 Diaptomus, 515. 

 Diatoms, 495, 500, 505. 

 Dickcissel, 375. 382. 

 Dicotyledons, 578. 

 Digitaria filiformis, 76, 77, 147. 



sangiiinalis, 305, 354. 

 Dineiites, 506. 

 Diodia teres, 56, yj, 93, 04, 99, lOQ, 127, 



140, 141, (see Errata), 167. 

 Dioscorea paniculata, 341, 357. 



villosa, 136, 151. 

 Dioscoreacea?, 151, 357. 

 Diospyros virginiana, 210. 

 Dock, Curled, 358. 



Great Water, 358. 

 Dodecatheon meadia, 134, 163, 336, 337, 



Doellingeria umbellata, 367. 



Dog-fennel, 368. 



Dogbane, Spreading, 364. 



Dogfish, 407-408, 534, 537. 



Dogs, 12. 



Dogwood, 189. 205. 278, 286, 292, 340. 



Alternate-leaved, 210. 



Blue, 210. 



Flowering, 210. 



Red-osier, 363. 

 Dorosoma cepedianum, 526, 529. 

 Doryphora, 474. 

 Dove, Mourning, ^/^, 385. 

 Draba caroliniana, 76, 141, 156, 305, 359 

 Dragon-flies, 513, 525, 531, ^3-- 

 Drop-seed. 355. 

 Drosera rotundifolia, 333, 360. 

 Droserace?e, 360. 

 Dryops lithophilus, 536. 

 Duckweed, 356, 504, 517, 520, 535. 

 Dulichium arundinaceum, 323, 331, 355, 



578, 593- 



E 



Earthworms, 15, 16, 17, 18, 19, 22. 

 Echinochloa crusgalli, 325, 354, 389, 394. 

 Echinocvstis lobata, 342, 366. 

 Eel, 538. 



Elateridae, 19. 

 Elder, 366. 



Eleocharis acuminata, 275, 328, 355. 

 intermedia, 317, 332, 355. 

 obtusa, no, 115, 150, 596. 

 palustris, 379, 590, 596. 

 Elm, 137, 180, 181. 184, 185. 186, 187, 

 188, 190, 192, 194, 195, 196, 198, 202, 

 204, 213, 214, 216, 217, 220, 223, 228, 

 229, 234, 241, 344. 

 American, 208, 233. See also Elm, 



White. 

 Cork, 204, 208. 

 Hickory, 208 

 Red, 200, 201, 204, 208. 

 Rock, 208. 

 Slippery, 208. 

 Water,' 208. 

 White. 197, 198, 200, 201, 204, 208, 233. 



.See also Elm, American. 

 Wing or Winged, 204. 208. 

 Elodea, 304, 335. 



canadensis, 320, 321, 354. 

 Elymus canadensis, 71, 81, 141, 149, 277, 

 283, 285, 287, 288, 290, 293, 299, 310, 

 318. 335. 33^^ 355- 

 striatus, 149. 

 \irginicus, 66, i-|0, 393. 

 EnchytraeidfC, 615, 636. 

 Enchytr.Tus, 615. 

 Entomostraca, 302, 308, .jot, 406, 515, 



540. 

 Epilohium adenocaulon, 604. 

 angustifolium, 313, 363, 604. 

 color atum, 604. 

 donsum, 31.1. 330, 333, 363. 

 Epistylis plicatilis, 499, 303, 319, 520. 

 Equisetacere, 146. 353, 593. 

 Equisetum arvense, 112, 113, 146, 268, 

 269, 272, 314, 341, 333, 590, 593. 

 hyemale, 137, 146, 2S6, 295, 333. 

 intermedium, 65, 67, 73, roi (see 

 Errata), no. 146. 

 k-evigatum, 3ii,_ 353. 

 Eragrostis frankii, 393. 

 hypnoides, 389, 595. 

 pectinacea. 32, 64, 73, 73, T49. 

 purshii, 368. 



trichodes, 32. 64, 83, ITO, IJ2, 140. 

 Erechtites hieraci folia, 368, 389, 609. 

 Ericaceae, 163, 363. 



l\rigeron annuus, 61, 62 (see Errata). 

 T69 (see Errata), 303. .367, 609. 

 canadensis, 66, 77, 169, 304. 305, 314, 

 367. ! 



