INDEX 



327 



Stone fly, larva, 186 



Stony Island, 36, 85, 87 



Streak, 70 



Stream: action of, 3; communities, 

 276, 277, 278 



Sugar Creek, 10 



Sun, 21; rate of movement of, 22 



Sundew, Drosera rotundifolia 



Sweet Cicely, see Cicely 



Syenite, 75 



Talus, 12 



Tamarack-sphagnum bog, 179, 193, 194 



Tamarack zone, 200 



Tape grass, Vallisneria 



Temperature, effect of, on plant and 

 animal distribution, 90 



Termites, Termes flavipes, 152 



Tiger beetle, distribution of, 148 



Thimbleweed, Anemone cylindrica 



Thistle: 



— Bull, Cirsium lanceolatum 

 — Canada, C. arvense 

 — Pasture or prairie, C. pumilum 

 — Sand, C. Pitcherii 



Thorn Creek, 2, 4 



Tickseed, Coreopsis grandi flora 



Toadflax, bastard, Comatidra umbellaia 



Toad: life-history of, 102; see Amphibia 



Tolleston stage of Lake Chicago, 84, 87 



Tooth wort, Dentaria laciniata 



Touch-me-not, Impatiens biflora 



Trees: 



— Acer: 



saccharinum, river-bank maple, 

 272, 274 



sacchariim, hard, rock, or sugar 

 maple, 205, 206 

 — Amelanchier canadensis, Juneberry, 



shadbush, sugar plum, 132, 133, 



205 

 — Asimina triloba, pawpaw, 20^, 208, 



274 

 — Betula alba, white birch, 260 

 — Carpinns' caroliniana, water beech, 



137, 138, 140, 205, 206, 270 

 — Celtis occidentalis, hackberry, 203, 



204, 204 

 — Cercis canadensis, red-bud, 205, 206, 



208, 274 



— Cornus florida, flowering dogwood, 



205, 206, 207, 274 

 — Crategns, hawthorne, 228 

 — Fagiis grandifolia, beech, 204 

 — Fraxinns: 



americana, white ash, 272, 274 



nigra, black ash, 272, 274 



pcnnsylvanica, red ash, 272 



quadrangulata, blue ash, 272, 274 

 — Gymnocladus dioecia, Kentucky coffee 



tree, 271, 274 

 — Juglans: 



cinerea, white walnut, 203, 204, 

 221, 274 



7iigra, black walnut, 203, 204, 221 

 — Juniper us virginiana, red cedar, 124, 



127, 260 

 — Larix laricina, larch, tamarack, 193, 



200 

 — Lirode'udron Tulipifera, tuhp tree, 



203, 203, 274 



— Nyssa sylvatica, sour gum, 178, 180 



— Ostrya virginiana, hop hornbeam, 137, 

 138, 205, 206, 270 



— Finns: 



Banksiana, jack pine, 124, 12/, 260 

 strobus, white pine, 7, 124, i2y, 260 



— Platanus occidentalis, sycamore, 203, 



204, 205, 274 

 — Populus: 



deltoides, cottonwood, 114, 116, 



120, 122, 260 

 gra}ididentata, large-toothed aspen 



228, 260 

 tremoloidcs, small-toothed aspen 



228, 260 

 — Pruniis: 



nigra, wild plum, 228 

 pennsylvanica, pincherry, 132, 133 

 serotina, black cherr}', 203, 204, 204, 



221, 274 

 virginiana, choke cherr}', 132, 133, 



264, 265 

 — Ptelea trifoliata, hop tree, 132, 134, 



270 

 — Pyrus coronaria, wild crabapple, 22S> 

 — Quercus: 



alba, white oak, 137, 138, 139 

 bicolor, swamp white oak, 139 

 coccinca, scarlet oak, 139 

 cllipsoidalis, northern pin or hill 



oak, 139 

 imbricaria, shingle oak, 139 

 macrocarpa, bur oak, 139 

 mariltindica, blackjack oak, 139 

 Mic/iaiixii, basket oak, 139 



