xiv LIST OF ILLUSTRATIONS 



PAGE 



SKULL OF Cow . . 104 



STOMACH OF SHEEP . . 105 



EUROPEAN WILD BOAR . . . . . . . . . 110 



SOFT MAPLE . . . . . . . . . . . 138 



WHITE ASH . . . . . . . . . . .140 



WHITE ELM ........... 141 



PAPER BIRCH . . 142 



IRONWOOD 143 



SUGAR MAPLE . . . . . ... . 145 



BUTTERNUT 146 



BlTTERNUT, OR SWAMP HlCKORY 147 



BUR OAK . . . . .- . . . . .148 



SCARLET OAK . . . . ^ . , . . . >. .149 



HACKBERRY 150 



LINDEN 151 



BALTIMORE ORIOLE . . . . .... . . 159 



ROSE-BREASTED GROSBEAK . . . 160 



WILD MUSTARD . . . ,. . . . . . .193 



MONARCH BUTTERFLY . . . . . . . . . 203 



GERMAN, BLACK, OR BROWN BEE ...... 205 



ROCKY MOUNTAIN LOCUST . . . . .* , . . 214 



CLAYTON'S FERN . .240 



BRAKE OR BRAKEN . . . . . . . . . 241 



MAIDENHAIR FERN 242 



BARE-SOIL Moss . ... . . . . . . 245 



HAIR Moss AND COMMOX PEAT Moss 246 



A COMMON MUSHROOM 248 



A PUFFBALL . . 249 



