LIST OF ILLUSTRATIONS xvii 



PAGE 



FIG. 121. Anemone, A nemone cylindrica 133 



FIG. 122. Columbine, A quilegia canadensis 133 



FIG. 123. Lupine, Lupinus perennis 134 



FIG. 124. Rock Cress, Arabis lyrata 135 



FIG. 125.. Hoary Pea, Tephrosia virginiana . . . . . 135 



FIG. 126. Bush Clover, Lespedeza capitata . . . . <l '".-''' . 135 



FIG. 127. Wild Geranium, Geranium carolinianum .:."*. I f . . 135 



FIG. 128. Flowering Spurge, Euphorbia corollata . .--:i- . . 135 



FIG. 129. Bird's-Foot Violet, Viola pedata . . , . ./ ... . . . 135 



FIG. 130. Butterfly Weed, A sdepias tuber osa . . -./. . V . 135 



FIG. 131. Arrow-leaved Violet, Viola lanceolata . *'',.;-.'. -.- ; . ' . 135 



FIG. 132. Louse wort, Pedicular is canadensis . . .,:..'. . 135 



FIG. 133. Wild Bergamot, Monardafistulosa . . ;';.;* . . 136 



FIG. 134. Blazing Star, Liatris spicata . . . i . *;. ,. ; . .: . 137 



FIG. 135. Mixed Oak Association . . . . .--; ,;;, . . 138 



FIG. 136. Oaks of Chicago Area , -v. . . .-; . . . 139 



FIG. 137. Water Beech, Carpinus caroliniana . . . . . 140 



FIG. 138. Yellow Lady's-Slipper, Cypripedium parviftorum . . 141 



FIG. 139. Hepatica, Hepatica triloba . ' . , . ; ' . 142 



FIG. 140. May Apple, Podophyllum peltatum . . ' "?.:<> ?- . . 142 



FIG. 141. Wild Geranium, Geranium maculalum . .; .'' . ; . . 142 



FIG. 142. Canada Violet, Viola canadensis . ,..:;> ;.:..,> . . 142 



FIG. 143. Long-Spur Violet, V. rostrata fi v; '.;:;.- . '. , . 142 



FIG. 144. Rattlesnake Root, Prenanthes alba ,\ . .... . . . 142 



CHAPTER VIII 



FIG. 145. Species of Tiger Beetles ; ^^ i r i . ... . 149 



FIG. 146. Termites or White Ants, Termes flavipes . . : . . 152 



FIG. 147. Sand-colored Spider, Trochosa cinerea .-'' ..' . . . 152 



FIG. 148. The Searcher and Fiery Hunter, Calosoma scrutator and 



C. calidum . . .. . . . . v . . 153 



FIG. 149. A Digger Wasp, Microbembex monodonta .--.'.. 153 



FIG. 150. The Bee Fly, Exoprospa ' . .154 



FIG. 151. Willow-Leaf Beetle, Disonycha quinqueviltata . . . 154 



FIG. 152. Snout Beetle, Sphenophorus . . . . . ' . . 155 



FIG. 153. Nest Holes of Bank Swallows -"V . . . 4 -. . 155 



FIG. 154. Maritime Locust, Trimerotropis maritima . . . .156 



FIG. 155. Mottled Sand Locust, Sparagemon wyomingianum . .156 



FIG. 156. Long-horned Locust, Psinidia fenestralis . . . .157 



FIG. 157. Lesser Migratory Locust, Melanoplus atlanis . . . 157 



FIG. 158, Narrow-winged Locust, M. angustipennis . . . .157 



