The Indians inhabiting the Everglades before the Seminole war had been driven there from the adjacent islands by conquest. They did not belong to this tribe. They spoke Spanish, and many of them had been baptized in Havana. Their pursuits were quite different--they fished and followed the sea as a means of support, having never been ten miles from the shore. No account has ever been written by modern explorers in that region which gives the reader as correct an idea of the topography of the country as the one given by the engineer who accompanied Colonel Harney, Jan. 1, 1841. Those who visit there now and return, appear to have a commingling of scenery--the flowers, the grass, and water, all being blended, the quantity of each not designated. This grass-water country is said to be like no other place in the world--a sea of water filled with grass and green trees, that can only be approached by canoes, which must be pulled through the mud and saw-grass, and then paddled when the water is of sufficient depth, with a black soil of measureless extent. The following interesting extracts will enable us to form an idea of the energy and enterprise required during the Seminole war to penetrate the fastness of a country where the foes intrenched themselves, and from which they made sallies upon the unwary more to be dreaded than any disease which visited them. The expedition was conducted by Colonel W. S. Harney. His forces were distributed in four or five large canoes, carrying from six to ten men each; the greater number went in boats made for the purpose, containing five men each. Orders were given that every man should be provided with twenty days' rations, sixty rounds of ball and cartridge, with the necessary blankets, etc. The most perfect silence was to be observed by all; orders communicated by signal-whistles, with which the officers were supplied; the boats moving in single file, twenty paces apart, every man ready to drop his paddle and seize his gun at a moment's notice. The dragoons were armed with Colt's repeating rifles, and, being under command of Colonel Harney, formed a well-tried band of experienced Indian-fighters. Half an hour after sunset, and during a shower of rain, the command left Fort Dallas, which is situated on the bay at the mouth of Indian River, eight miles above Kev Biscayne--Colonel Harney in advance, with Mico as guide, and negro John as interpreter, the army next, and the navy in the rear. After passing up the bay seven miles, they entered the mouth of Little River, a tortuous and extremely rapid outlet from the Everglades, where they struggled against the current until after midnight, when they reached their first resting-place--the site of an old plantation--where they landed.