It is difficult to pronounce which division of the earth, within the polar circles, produces the greatest variety. The tropical division certainly affords those which principally contribute to the more luxurious scenes of splendour, as Myrtus communis, Myrt. caryophyllata, Myrt. pimenta, Caryophylus aromaticus, Laurus cinnam. Laurus camphor. Laurus Persica, Nux mosch. Illicium, Camellia, Punica, Cactus melo-cactus; Cactus grandiflora, Gloriosa superba, Theobroma, Adansonia digitata, Nyctanthes, Psidium, Musa paradisica, Musa sapientum, Garcinia mangostana, Cocos nucifera, Citrus, Citrus aurantium, Cucurbita citrullus, Hyacinthus, Amaryllis, Narcissus, Poinciana pulcherrima, Crinum, Cactus cochinellifer. But the temperate zone (including by far the greater portion of the earth, and a climate the most favourable to the increase and support of animal life, as well as for the exercise and activity of the human faculties) exhibits scenes of infinitely greater variety, magnificence and consequence, with respect to human economy, in regard to the various uses of vegetables. For instance, Triticum Cereale, which affords us bread, and is termed, by way of eminence, the staff of life, the most pleasant and nourishing food to all terrestrial animals. Vitis vinifera, whose exhilarating juice is said to cheer the hearts of gods and men. Oryza, Zea, Pyrus, Pyrus malus, Prunus, Pr. cerasus, Ficus, Nectarin, Apricot, Cydonia. Next follow the illustrious families of forest-trees, as the Magnolia grandiflora and Quercus sempervirens, which form the venerated groves and solemn shades, on the Mississipi, Alatamaha and Florida; the magnificent Cupressus disticha of Carolina and Florida; the beautiful Water Oak[1], whose vast hemispheric head presents the likeness of a distant grove in the fields and savannas of Carolina; the gigantic Black Oak[2], Platanus occidentalis, Liquidambar styraciflua, Liriodendron tulipera, Fagus castanea, Fagus sylvatica, Juglans nigra, Juglans cinerea, Jug. pecan, Ulmus, Acer saccharinum, of Virginia and Pennsylvania; Pinus phœnix, Pinus tœda, Magnolia acuminata, Nyssa aquatica, Populus heterophylla and the floriferous Gordonia lasianthus, of Carolina and Florida; the exalted Pinus strobus, Pin. balsamica, Pin. abies, Pin. Canadensis, Pin. larix, Fraxinus excelsior, Robinia pseudacacia, Guilandina dioica, Æsculus Virginica, Magnolia acuminata, of Virginia, Maryland, Pennsylvania, New Jersey, New York, New England, Ohio and the regions of Erie and the Illinois; and the aromatic and floriferous shrubs, as Azalea coccinia, Azalea rosea, Rosa, Rhododendron, Kalmia, Syringa, Gardenia, Calycanthus, Daphne, Franklinia, Styrax and others equally celebrated.