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 lyr ata . . 135 



FIG. 125. Hoary Pea, Tephrosia virginiana 135 



FIG. 126. Bush Clover, Lespedeza capitata 135 



FIG. 127. Wild Geranium, Geranium carolinianum . . . .135 



FIG. 128. Flowering Spurge, Euphorbia corollata 135 



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



FIG. 130. Butterfly Weed, Asdepias tuberosa 135 



FIG. 131. Arrow-leaved Violet, Viola sagittata 135 



FIG. 132. Lousewort, Pedicularis canadensis 135 



FIG. 133. Wild Bergamot, Monardafistulosa 136 



FIG. 134. Blazing Star, Liatris spicata 137 



FIG. 135. Mixed Oak Association 138 



FIG. 136. Oaks of Chicago Area 139 



FIG. 137. Water Beech, Carpinus caroliniana 140 



FIG. 138. Yellow Lady's-Slipper, Cypripedium parviflorum . . 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. rostrala . . . . . .142 



FIG. 144. Rattlesnake Root, Prenanthes alba 142 



CHAPTER VIII 



FIG. 145. Species of Tiger Beetles . . 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 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 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, M elanoplus atlanis . . .157 

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



