LIST OF ILLUSTRATIONS xix 



PAGE 



FIG. 197. Pennsylvania Saxifrage, Saxifraga pennsylminica . .178 



FIG. 198. Sensitive Fern, Onoclea sensibilis 179 



FIG. 199. Sour Gum, Nyssa sylvatica 180 



FIG. 200. Swamp Holly, Ilex verticillata 181 



FIG. 201. Meadowsweet, Spiraea.latifolia 181 



FIG. 202. Steeplebush, S. tomentosa 181 



FIG. 203. Royal Fern, Osmunda regalis . . . . . . .182 



FIG. 204. Clayton's Fern, Osmunda Claytoniana . . . . . 182 



FIG. 205. Cinnamon Fern, Osmunda cinnamomea . . . .182 



FIG. 206. Second Type of Pond 183 



FIG. 207. Shrubby Cinquefoil, Potenlilla frulicosa .... 184 



FIG. 208. A Small Clam, Sphaerium simile 184 



FIG. 209. Nymph of A nax 184 



FIG. 210. Nymph of Leucorhinia inlacla, after Shelf ord . . . 185 

 FIG. 211. Adult Libellula pulchetta, from Needham . . . . 185 

 FIG. 212, A and B Aquatic Insects and Their Young . . 186, 187 

 FIG. 213. Diving Spider, Dolomedes sexpunctalus .... 188 



FIG. 214. The Eft, Diemictylus viridescens 189 



FIG. 215. Garden Spider, Argiope 190 



FIG. 216. Tettix granulatus, Tettigidea later alis 190 



FIG. 217. Short-horned Locust, Tryxalis brevicornis .... 191 

 FIG. 218. Short-winged Green Locust, Dichromorpha mridus . . 191 

 FIG. 219. Slender-bodied Locust, Leptysma marginicottis . . .191 



FIG. 220. Hoosier Locust, Paroxya hoosieri 191 



FIG. 221. Scudder's Paroxya, P. scudderi . . . . . .191 



FIG. 222. Striped Ground Cricket, Nemobius fasciatus . . .192 

 FIG. 223. Leather-colored Locust, Schistocerca alutacea . . .192 

 FIG. 224. Nebraska Locust, Phaetalioles nebrascensis . , . .192 

 FIG. 225. Marsh Conehead, Conocephalus palustris .... 192 



FIG. 226. A Sphagnum Bog 193 



FIG. 227. The Slender Sedge, Car ex filiformis 193 



FIG. 228. The Shore Sedge, C. riparia 193 



FIG. 229. An Orchis, Arelhusa bulbosa 194 



FIG. 230. The Bearded Orchis, Calapogon pulchellus .... 194 



FIG. 231. The Sundew, Drosera rotundifolia 195 



FIG. 232. Tickseed, Coreopsis grandiflora 195 



FIG. 233. Cottony Grass, Eriophorum gracile 195 



FIG. 234. Swamp Horsetail, Equisetum fliiviatile 195 



FIG. 235. Swamp Fern, Aspidium Thelypteris 195 



FIG. 236. Sphagnum Moss 195 



FIG. 237. Ragged Orchis, Habenaria lacera 196 



