_Species._ 1 Mole. 2 Shrew. 1 Bear. 1 Glutton. 1 Otter. 2 Wolf. 2 Fox. 2 Seal. 2 Weasel. 1 Beaver. 1 Field-mouse. 1 Campagnol (rat.) 1 Squirrel. 2 Deer. 1 Sheep. The whole number of common species is twenty one; leaving eighty-six species as peculiar to North America, though not all of them to the United States. Charles Lucien Bonaparte has arranged the birds of the United States in twenty-eight families, eighty-one genera, and three hundred and sixty-two species, viz.: two hundred and nine land, and one hundred and fifty-three water-birds. Of the eighty-one genera, sixty-three are common to Europe and America, while eighteen have no representatives in Europe. CHAPTER XVII.――BOTANY. The vegetation of the United States is as various as the climate and soil. In Florida and the southern states, the superb magnolia, the majestic tulip tree and the deciduous cypress charm the traveller by their grandeur and beauty. The lofty oak, the stately fir and the gracefully-waving elm of the north, present a different and still a highly interesting study to the naturalist. As a general observation, the trees of the United States are larger, taller, and more generally useful for timber than those of Europe. As to height, it is observed by Michaux, that, while in France only thirty-seven species of trees arrive at thirty feet, in the transatlantic republic, one hundred and thirty exceed that elevation. A general idea of the American forest having thus been given, we will now notice, as largely as our limits will permit, the most remarkable trees. _Oak._――The _White Oak_ is found throughout the United States, though it is by no means equally diffused. It abounds chiefly in the middle states, particularly in that part of Pennsylvania and Virginia which lies between the Alleghanies and the Ohio, a distance of about one hundred and fifty miles, where nine tenths of the forests are frequently composed of these trees, whose healthful appearance evinces the favorable nature of the soil. East of the mountains, this tree is found in every exposure, and in every soil which is not extremely dry or subject to long inundations; but the largest stocks grow in humid places. In the western districts, where it composes entire forests, the face of the country is undulated, and the yellow soil, consisting partly of clay with calcareous stones, yields abundant crops of wheat.