The most striking contrast between the physical conditions of the New York colony and those of New England is its relative isolation from the sea. Staten Island and Long Island are strictly maritime; the rest is almost continental in its relations.
South of New York the conditions of the colonists as regards agriculture were very different from what they were north of that point. To the north the soil is altogether the work of the glacial period. It is on this account stony and hard to bring into cultivation, as before described; but when once rendered arable, it is very enduring, changing little with centuries of cropping. South of this point the soil is derived from the rocks which lie below it, save just along the sea and the streams. The decayed rock that happens to lie just beneath the surface produces a fertile or an infertile earth, varied in quality according as the rocks. On the whole it is less enduring than are the soils of New England, though it is much easier to bring it into an arable state. It also differs from glacial soil in the fact that there is an absolute dependence of the qualities it possesses upon the subjacent rock. When that changes, the soil at once undergoes a corresponding alteration. In certain regions it may be more fertile than any glacial soil ever is; again, its infertility may be extreme, as, for instance, when the underlying rocks are sandstones containing little organic matter.
In this southern belt the region near the shore is rather malarial. The soil there is sandy, and of a little enduring nature, and the drainage is generally bad. Next within this line we have the fringe of higher country which lies to the east of the Blue Ridge. This consists of a series of rolling plains, generally elevated four or five hundred feet above the sea. Near the Blue Ridge it is changed into a rather hilly district, with several ranges of detached mountains upon its surface; to the east it gradually declines into the plain which borders the sea. Within the Blue Ridge it has the steep walls of the old granite mountains, which, inconspicuous in New Jersey, increase in Pennsylvania to important hills, become low mountains of picturesque form in Virginia, and finally in North and South Carolina attain the highest elevation of any land in eastern North America. This mountain range widens as it increases in height, and the plains that border it on the east grow also in height and width as we go to the southward in Virginia. All this section is composed of granite and other ancient rocks, which by their decay afford a very good soil. Beyond the Blue Ridge, and below its summits, are the Alleghanies. Between them is a broad mountain valley, known to geologists as the great Appalachian valley. This is an elevated irregular table-land, generally a thousand feet or more above the sea, and mostly underlaid by limestone, which by its decay affords a very fertile soil. This singular valley is traceable all the way from Lake Champlain to Georgia. The whole course of the Hudson lies within it. As all the mountains rise to the southward, this valley has its floor constantly farther and farther above the sea, until in Southern Virginia much of its surface is about two thousand feet above that level. This southward increase of elevation secures it a somewhat similar climate throughout its whole length. This, the noblest valley in America, is a garden in fertility, and of exceeding beauty. Yet west of this valley the Alleghanies proper extend, a wide belt of mountains, far to the westward. Their surface is generally rugged, but not infertile; they, as well as the Blue Ridge, are clad with thick forests to their very summits.
The shore of this, the distinctly southern part of the North American coast, is deeply indented by estuaries, which have been cut out principally by the tides. These deep sounds and bays,—the Delaware, Chesapeake, Pamlico, Albemarle, and others,—with their very many ramifications, constitute a distinctive feature in North America. Although these indentations are probably not of glacial origin, except perhaps the Delaware, they much resemble the great fjords which the glaciers have produced along the shores of regions farther to the northward. By means of these deep and ramified bays all the country of Virginia and Maryland lying to the east of the Appalachians is easily accessible to ships of large size. This was a very advantageous feature in the development of the export trade of this country, as it enabled the planters to load their crops directly into the ships which conveyed them to Europe, and this spared the making of roads,—a difficult task in a new country. The principal advantage of this set of colonies lay in the fact that they were fitted to the cultivation of tobacco. The demand for this product laid the foundations of American commerce, and was full of good and evil consequences to this country. It undoubtedly gave the means whereby Virginia became strong enough to be, on the part of the South, the mainstay of the resistance of the colonies to the mother country. On the other hand, it made African slavery profitable, and so brought that formidable problem of a foreign and totally alien race to be for all time a trouble to this country. Although the cultivation of cotton gave the greatest extension to slavery, it is not responsible for its firm establishment on our soil. That was the peculiar work of tobacco.
The climate of this region is perhaps the best of the United States. The winters want the severity that characterizes them in the more northern States, and the considerable height of the most of the district relieves it of danger from fevers. I have elsewhere spoken of the evidences that this district has maintained the original energy of the race that founded its colonies.
The Carolinian colonies are somewhat differently conditioned from those of Virginia, and their history has been profoundly influenced by their physical circumstances. South of the James River the belt of low-lying ground near the sea-shore widens rapidly, until the nearest mountain ranges are one hundred and fifty miles or more from the shore. This shore belt is also much lower than it is north of the James; a large part of its surface is below the level where the drainage is effective, and so is unfit for tillage. Much of it is swamp. The rivers do not terminate in as deep and long bays, with steep clay banks for borders, as they do north of the James. They are generally swamp-bordered in their lower courses, and not very well suited for settlements.
The soil of these regions is generally rather infertile; it is especially unfitted for the cultivation of grains except near the shore, where the swamps can often be converted into good rice-fields. Maize can be tilled, but it, as well as wheat, barley, etc., gives not more than half the return that may be had from them in Virginia. Were it not for the cotton crop, the lowland South would have fared badly.
All the shore belt of country is unwholesome, being affected with pernicious fevers, which often cannot be endured by the whites, even after the longest acclimatization. The interior region, even when not much elevated above the sea, or away from the swamps, is a healthy country, and the district within sight of the Blue Ridge and the Black Mountains is a very salubrious district. This region was, however, not at once accessible to the colonists of the Carolinian shore, and was not extensively settled for some time after the country was first inhabited, and then was largely occupied by the descendants of the Virginian colonists.
The history of this country has served to show that much of the lowlands near the shore is not well fitted for the use of European peoples; they are likely to fall into the possession of the African folk, who do not suffer, but rather seem to prosper in the feverish lowlands. The interior districts beyond the swamp country are well suited to Europeans, and where the surface rises more than one thousand feet above the sea, as it does in western North and South Carolina, the climate is admirably well suited to the European race. It is probable that the English race has never been in a more favorable climate than these uplands afford.