LXXI. Acer rubrum 142 LXXII. Acer saccharinum 144 LXXIII. Acer Saccharum 146 LXXIV. Acer Saccharum var. nigrum 147 LXXV. Acer spicatum 149 LXXVI. Acer Pennsylvanicum 151 LXXVII. Acer Negundo 153 LXXVIII. Tilia Americana 155 LXXIX. Cornus florida 157 LXXX. Cornus alternifolia 158 LXXXI. Nyssa sylvatica 160 LXXXII. Diospyros Virginiana 162 LXXXIII. Fraxinus Americana 164 LXXXIV. Fraxinus Pennsylvanica 165 LXXXV. Fraxinus Pennsylvanica. var. lanceolata 166 LXXXVI. Fraxinus nigra 168 LXXXVII. Viburnum Lentago 169 BOTANICAL AUTHORITIES. PAGE ATKINS, C. G. Pinus Banksiana, Lamb 8 AVERILL, C. K. v Populus balsamifera, L. (_Rhodora_, II, 35) 36 Prunus Americana, Marsh. 123 Quercus Muhlenbergii, Engelm. 84 BAILEY, L. H. Populus candicans, Ait. 37 BAILEY, W. W. Celtis occidentalis, L. 100 Fraxinus Pennsylvanica, _var._ lanceolata, Sarg. 166 BARTRAM, WILLIAM Quercus tinctoria (1791) 89 BATCHELDER, F. W. Betula nigra, L. 65 Salix discolor, Muhl. (Laconia, N. H.) 41 BATES, J. A. Pinus Banksiana, Lamb 8 Sassafras officinale, Nees 106 BISHOP, J. N. v Celtis occidentalis, L. 100 Fraxinus Pennsylvanica, Marsh. 164 Fraxinus Pennsylvanica, _var._ lanceolata, Sarg. 166 Juglans nigra, L. (_in lit._, 1896) 48