INDEX. 
Ill 
Page. 
Lirodendron tulipifera . 189 
Lonicera . 104 
Maize. ..89, 122 
Maple, Soft . 47 
Sugar.... t... 18 
Meadowsweet. 65 
Melilotus italica . 192 
Mentha viridis . 69 
Milkweed. 58 
Mint, harden...'. 69 
Nectarine. 76 
Negundo aceroides .103 
Nerium oleander. .* . 95 
Oak, .79, 107, 139, 200 
Bur. 108 
Iron. 163 
Bed . 113 
Swamp-white . 163 
White.118, 163 
Oats. 5 i 
Oleander . 95 
Orache, Garden . 88 
Panicum crus-corvi. . 56 
glabrum . .138, 170 
Papaver. 88 
Parsnip.*. . ’. ’ 84 
Pastinacea sativa . .... 84 
Pea,.'..65 
Sweet .•. . 65 
Peach.!. 76, 102 
Pear . 9 . 16 
Pecan. 199 
Persimmon. ..’ ’ .... 96 
Pig-weed. 88 
Pine..14," 102,' 156 
White. 117 , 137 , 140 
Pink, Carnation . 80 
Plum . .76, 82, 87 
Poa annua . 167 
Polyg-onum persicaria . \ . ...... 62 
Poplar. .. . . 102 
Balsam. 153 , 154 
Balm of Gilead . 105 
Cottonwood. 104 149, 151 
Peppy. 88 
Populus ang-ulata. 104, 151 
balsamifera.206,' 208’ 209 
g-randidentata. 102 
monilifera... 149, 206, 208 
tremuloides.,. 148, 149 
Prunus virg-iniana.93 
Quercus alba .•. , . . . 163 
bicolor.”i63,’ 198 
imbricaria. 196 
macrocarpa.. I'V.^...................... 108 
obtusiloba..163 
prinus.. ... . 199 
rubra. li3, 197 
Rag-weed. 
Raspberry. 
Red current. 
Red elm . 
Red oak . 
Ribes g-rossularia.... 
nig-rum. 
rubrum . 
Robinia viscosa. 
Rose. 
Rubus fruticosus ... 
idaeus . 
occidentalis . 
Rudbeckige laciniata 
Rumex acetosa. 
Rye . 
64. 
49 
148 
77 
153 
113 
77 
62 
77 
192 
50 
64 
64 
148 
49 
88 
51 
Salix alba. 
babvlonica 
lucid a. 
nigra. 
.... 201 
194, 200 
192, 200 
.... 192 
