I listened for a moment at the mouth of the aperture, but heard only the murmuring of the stream as it swept along through the uneven channel. I then thrust in my head, when I heard a rushing noise as of the flapping of a thousand wings, and the next moment I was sprawling on my back in the water, having been summarily capsized, partly by force and partly by an involuntary start of terror! I raised my head and beheld a legion of BATS, some of them of uncommon size, issuing in a stream from the mouth of the cave. These animals in the tropics are numerous, and seclude themselves from the light of day in caverns or other dark and lonely recesses, where they attach themselves to the roof, and clinging to each other are suspended in large pyramidal clusters or festoons. When disturbed, they take wing, and hastily quit their abodes. By unthinkingly intruding on their territories, which had probably never before been invaded, great alarm was excited among the inmates; a terrible confusion ensued, and the general rush to the aperture caused my unceremonious overthrow. In one of my mountain excursions, I lost my way while enveloped in a dense mist, and, after descending a steep ridge, came upon a platform or terrace of several acres' extent, which at first view seemed to have been formed by artificial means on the mountain side. This plain was level, and thickly covered with coarse grass, which, finding a genial soil and region, grew to a height of five or six feet. Near the centre of the prairie stood the only tree which flourished on this fertile spot. It was a silk cotton tree. I made my way through the grass with difficulty to the tree, which by measurement I found to be twenty-five feet in circumference larger than any other tree I ever saw in the island. Immense branches shot out horizontally about twenty feet from the ground, extending to a distance in every direction from the trunk sixty or eighty feet. Indeed, the gigantic size of the tree, its rich and luxuriant foliage, and its noble and majestic appearance, were in perfect keeping with the place. I tarried some time beneath its branches, and gazed with interest on the picturesque scene, regretting that I had no companion to share my admiration, and thinking that as doubtless no human being, unless some wild Carib in days of yore, had ever previously visited that singular spot, so it was likely centuries would pass away before any other individual would chance to behold and admire that beautiful terrace on the mountain side. I then plunged among the trees and vines growing upon the steep declivity on the further side, and, after a precipitous retreat of two or three hundred feet, heard the murmuring of a stream below, by following which I at length reached a cultivated district.