What, it may be asked, has impressed this peculiar and unusual crescentic shape to the reefs? This is owing to the Gulf Stream. This ocean-river rushes eastward through the Straits of Florida at the rate of five or six miles an hour, yet it does not wash the reef. By some obscure law of motion, an eddy counter-current is produced, moving westward, close to the reef, with a velocity of one or two miles an hour. Off Key West this secondary current is ten miles wide, with a rapidity of two miles per hour. Its waters are constantly whitened by the calcareous sands of the reef—the relics of the endless conflict between the waves and the untiring coral insects. The slowly-built houses of the latter are broken and tossed hither and thither by the billows, until they are ground into powder, and scattered through the waters. After every gale the sea, for miles on either side of the reef, is almost milk-white with the ruins of these coral homes.
But nature is ever ready with some compensation. The impalpable dust taken up by the counter-current is carried westward, and gradually sinks to the bottom of the gulf, close to the northern border of the gulf stream. At length a bank is formed, reaching to within 80 or 90 feet of the surface. At this depth the coral insect can live, and straightway the bank is covered with a multitudinous colony who commence building their branching structures. A similar process originated all the crescent-shaped lines of Keys which traverse the Everglades and Big Cypress.
2. SOIL AND CROPS.
Much of the soil of Florida is not promising in appearance. The Everglades and Cypress Swamps may be considered at present agriculturally worthless. The ridge of sand and decomposed limestone along the southern shore, from Cape Sable to Indian river, is capable, however, of profitable cultivation, and offers the best field in the United States for the introduction of tropical plants, especially coffee. Its area is estimated at about 7,000,000 acres.
The northern portion of the Peninsula is composed of “scrubs” (dry sterile tracts covered with thickets of black-jack, oak, and spruce), pine lands and hammocks (not hummocks—the latter is a New England word with a different signification). The hammocks are rich river bottoms, densely timbered with live oak, magnolia, palmetto, and other trees. They cannot be surpassed for fertility, and often yield 70 to 80 bushels of corn to the acre with very imperfect tillage. Of course, they are difficult to clear, and often require drainage.
The pine lands, which occupy by far the greater portion of the State, make at first an unfavorable impression on the northern farmer. The sandy pine lands near the St. John, are of deep white siliceous sand, with little or no vegetable mould through it. The greater part of it will not yield, without fertilizing, more than 12 or 15 bushels of corn to the acre. In the interior, on the central ridge, the soil is a siliceous alluvium on beds of argillaceous clay and marl. The limestone rocks crop out in many places, and could readily be employed as fertilizers, as could also the marl. Red clay, suitable for making bricks, is found in the northern counties, and a number of brick yards are in operation. Over this soil a growth of hickory is interspersed with yellow pine, and much of the face of the country is rolling. By mixing the hammock soil with the sand, an admirable loam is formed, suited to raising vegetables and vines.
Persons who visit Florida with a view to farming or gardening, should not expect to find it a land of exhuberant fertility, that will yield immense crops with little labor. East Florida is as a whole not a fertile country in comparison with South Carolina or Illinois, and probably never will be highly cultivated. On the other hand, they must not be discouraged by the first impressions they form on seeing its soil. Labor can do wonders there. The climate favors the growth of vegetables and some staples, but labor, hard work, is just as necessary as in Massachusetts. Middle and West Florida have much better lands.
The leading crops of the State are corn and cotton. Of the latter, the improved short staple varieties are preferred, the long staple nourishing only in East Florida. Some experiments have been tried with Egyptian cotton, but on too small a scale to decide its value. The enemy of the cotton fields is the caterpillar which destroys the whole crop in a very short time. Nor can anything be done to stop its ravages. In the vicinity of Tampa Bay and Indian River the sugar cane is successfully raised, quite as well as in Louisiana. In good seasons it is also a very remunerative crop in the northern counties, as it yields as much as fifteen barrels of first class syrup to the acre, besides the sugar.
Tobacco, which before the war was raised in considerable quantities in Florida, has been much neglected since. Good Cuba seed has been introduced, however, and some of the old attention is paid to it. The character of soil and climate of certain portions of Florida, especially the southeastern portion, is not very unlike that of the famed Vuelta Abajo, and with good seed, and proper care in the cultivation and curing of the leaf, it might be grown of a very superior quality.
The climate is too warm for wheat, but rye and oats yield full crops, though they are but little cultivated.—Sweet potatoes, yams, peas, and groundnuts are unfailing, and of the very best qualities. The vine yields abundantly, and it is stated on good authority that two thousand gallons of wine per acre have been obtained from vineyards of the Scuppernong grape in Leon county.