188 
Myrtle, Australian, 23. 
Myrtle, Wax, 87, 91, 93. 
Nemaspora aurea, 41. 
Nemaspora chrysosperma, 156. 
Nemaspora crocea, 24. : 
Narrow-leaved Cottonwood, 171. 
Necklace Poplar, 181. 
Nectolis, 95. 
Nectopix, 95. 
Nectusion, 95. 
Nematus ventralis, 101. 
Nepticula ostryefoliella, 32. 
Nestylix, 95. 
Neuwied, Prinz von, 138. 
New Zealand Black Beech, 23. 
New Zealand Silver Beech, 23. 
Nitidule, 97. 
Nive, 97. 
Nothofagus, 22. 
Nothofagus, 21. 
Octandre, 96. 
Octimia, 151. 
Oidium radiosum, 156. 
Oil, Birch-bark, 47. 
Oil of Birch, 51. 
Oiosodix, 95. 
Old Field Birch, 56. 
Onygena faginea, 25. 
Osier holts, 100. 
Ostrya, 31. 
Ostrya carpinifolia, 32. 
Ostrya, economic properties of, 32. 
Ostrya, fungal diseases of, 32. 
Ostrya, insect enemies of, 32. 
Ostrya Italica, 32. 
Ostrya Japonica, 32. 
Ostrya Knowltoni, 37. 
Ostrya Mandshurica, 32. 
Ostrya Ostrya, 32. 
Ostrya Ostrya, 34. 
Ostrya Virginiana, 34. 
Ostrya Virginica, 32, 34. 
Ostrya Virginica, « glandulosa, 34. 
Ostrya Virginica, B eglandulosa, 34. 
Ostrya vulgaris, 32. 
Panus conchatus, 25. 
Panus dorsalis, 25. 
Paper Birch, 57. 
Peach Willow, 111. 
Pentandre, 96. 
Peuplier suisse, 181. 
Pezicula carpinea, 41. 
Phegos, 21. 
Phlehia radiata, 25. 
Phylicifolie, 96. 
Phyllactinia suffulta, 11. 
Phyllocnistis populiella, 156. 
Phyllecus integer, 101. 
Phyllothyrsus, 68. 
Phylloxera Castanez, 10. 
Piper, Charles Vancouver, 145. 
Plectrodera scalator, 155. 
Pleiandre, 96. 
Pleiarina, 95. 
Polita, 9. 
Polyporus applanatus, 49. 
Polyporus betulinus, 49. 
Polyporus salicinus, 101. 
Poplar, 161. 
Poplar, Gray, 154. 
Poplar, Lombardy, 153. 
INDEX. 
Poplar, Necklace, 181. 
Poplar, Trembling, 155. 
Poplar, White, 154. 
Populin, 155. 
Populus, 151. 
Populus acuminata, 172. 
Populus alba, 154. 
Populus alba, 6, 154. 
Populus alba, B pyramidalis, 154. 
Populus alba, var. Bolleana, 154. 
Populus albo-tremula, 154. 
Populus alba x tremula, b canescens, 154. 
Populus, androgynous aments of, 151. 
Populus angulata, 179. 
Populus angulata, a serotina, 179. 
Populus angulata tortuosa, 179. 
Populus angulosa, 179. 
Populus angustifolia, 171. 
Populus angustifolia, 175. 
Populus argentea, 163. 
Populus Atheniensis, 158. 
Populus australis, 155. 
Populus balsamifera, 167. 
Populus balsamifera, 152, 163, 175. 
Populus balsamifera, a genuina, 167. 
Populus balsamifera, B laurifolia, 153. 
Populus balsamifera, -, 175. 
Populus balsamifera lanceolata, 167. 
Populus balsamifera suaveolens, 152. 
Populus balsamifera viminalis, 153. 
Populus balsamifera, var. angustifolia, 171. 
Populus balsamifera, var. (?) Californica, 175. 
Populus balsamifera, var. candicans 169. 
Populus betulifolia, 153. 
Populus biformis, 155. 
Populus Bolleana, 154. 
Populus Canadensis, 179, 183. 
Populus Canadensis, B discolor, 179. 
Populus Canadensis, y angustifolia, 171 
Populus candicans, 169. 
Populus canescens, 154. 
Populus Carolinensis, 179. 
Populus caudina, 153. 
Populus Certinensis, 153. 
Populus ciliata, 152. 
Populus cordifolia, 163. 
Populus deltoidea, 179. 
Populus dilatata, 153. 
Populus dilatata, B Carolinensis, 179. 
Populus diversifolia, 155. 
Populus, economic properties of, 155. 
Populus Euphratensis, 155. 
Populus Euphratica, 155. 
Populus fastigiata, 153. 
Populus Fremontii, 183. 
Populus Fremontii, var. (?) Wislizeni, 183. 
Populus, fungal diseases of, 156. 
Populus glandulosa, 179. 
Populus Greca, 154, 158. 
Populus grandidentata, 161. 
Populus grandidentata, g pendula, 161. 
Populus heterophylla, 163. 
Populus heterophylla, 179. 
Populus heterophylla, B argentea, 163. 
Populus Hudsonica, 153. 
Populus hybrida, 154. 
Populus, hybrids of, 152. 
Populus, insect enemies of, 155. 
Populus Italica, 153. 
Populus levigata, 179. 
Populus latifolia, 161, 179. 
Populus laurifolia, 153. 
Populus longifolia, 153. 
Populus major, 154. 
Populus Marilandica, 179. 
Populus, medical properties of, 155. 
Populus microcarpa, 152. 
Populus monilifera, 179, 183. 
Populus Monticola, 152. 
Populus Monticola, wood of, 152. 
Populus Neapolitana, 153. 
Populus nigra, 153. 
Populus nigra, 179. 
Populus nigra, B Helvetica, 179. 
Populus nigra, B pyramidalis, 153. 
Populus nigra, B Virginiana, 179. 
Populus nigra in the United States, 153. 
Populus nigra Italica, 153. 
Populus nivea, 154. 
Populus pendula, 155. 
Populus pseudobalsamifera, 152. 
Populus pyramidalis, 153. 
Populus pyramidata, 153. 
Populus salicifolia, 171. 
Populus serotina, 179. 
Populus Sieboldi, 155. 
Populus suaveolens, 152. 
Populus tremula, 154. 
Populus tremula, var., 158. 
Populus tremula, var. villosa, 155. 
Populus tremula pendula, 155. 
Populus tremuliformis, 158. 
Populus tremuloides, 158. 
Populus tremuloides, a pendula, 158. 
Populus trepida, 158. 
Populus trichocarpa, 175. 
Populus trichocarpa, var. cupulata, 175. 
Populus versicolor, 153. 
Populus villosa, 155. 
Populus Virginiana, 179. 
Pringle, Cyrus Guernsey, 129, 
Pringleophytum, 130. 
Prinz von Neuwied, 138. 
Prionoxystus Robinie, 10. 
Prionus laticollis, 155. 
Pruinose, 96. 
Psatherips, 95. 
Purple Beech, 24. 
Purpurez, 97. 
Quaking Asp, 158. 
Ramularia monilioides, 86. 
Red Beech, 23. 
Red Birch, 61. 
Rhytisma salicinum, 101. 
Rigide, 96. 
Ripselazis, 95. 
Ripsoctis, 95. 
River Birch, 61. 
Rosez, 96. 
Rugel, Ferdinand, 110. 
Rugelia, 110. 
SALICACEA, 95. 
Salicine, 100. 
Salix, 95. 
Salix 42gyptiaca, 98. 
Salix alba, 98. 
Salix alba, economic properties of, 98. 
Salix alba in the United States, 98. 
Saliz alba, p, 98. 
Salix alba, B vitellina, 98. 
Salix alba, y, 98. 
Salix alba, subspec. Pameachiana, 97. 
Salix alba, var. cerulea, 98. 
Salix alba x lucida, 97. 
? Salix ambigua, 103. 
