ILLUSTRATIONS 



FIGURE PAGE 



72. While Catchfly . 153 



73. Racemetl Catchfly 154 



74. Bouncing Bet 155 



74a. Night-Blooming Tobacco 15(5 



75. White variety of Purple-Fringed Orchis 157 



76. Carrion-Flower liH 



77. Purple Trilhum 163 



78. Water-Arum 165 



79. Mountain Saxifrage 166 



80. Arum 167 



81. Jack-in-tlie-Pulpit 169 



82. Jack-in-the-Pulpit 170 



83. Dutchman's-Pipe 171 



84. Speedwell 172 



85. Twinflower 175 



86. Common Milkweed 176 



87. Beetles which never visit flowers 179 



88. Choke-Cherry 181 



89. Sheepberry 183 



90. Common flower-visiting beetles 184 



91. Blue Flag 187 



92. Beetles with a tongue resembling that of a l)utterfly be- 



longing to the genus Nemognatha 191 



93. Wild Rose 195 



94. Mullein 197 



xvi 



