I ought to have realized what other life this genial warmth was likely to bring out, especially on the little island, the one dry refuge in miles of wild lagoon, but a month of cold weather had lulled me into forgetfulness of what every man who tramps the wilds of southern Florida must not forget. So I landed right eagerly and marched up under the palmettos with an armful of short, stout slats, a pocket full of nails, a hammer and a small saw. I would nail the slats, ladderwise, one above another up the trunk of my chosen palmetto, saw an entrance to the very center of the branching fronds at its top, and there I should sit, the very head of the palmetto cabbage, in a bower of green, watching my neighbors in a score or so of nests a little below me. I submit that it was a proper scheme, and the only reason why it was not carried out to immediate success was that I had not reckoned on the tenants of the lower flat. Upstairs everything was all right. The herons flapped away with croaking dismay as I came beneath their trees. I could see the long necks of some of the half-mature birds stretched upward from the nests of slender crossed reeds and sticks, and I glanced from them to the ground beneath the selected palmetto as I strode over brittle rubbish of their dead leaves and brush and royal ferns. And then I stopped with one foot in the air and a little whoop of dismay and utter terror of what was about to happen, for there beneath my selected palm, almost beneath my raised foot, was the body of a great snake. His head and tail were both hidden by the fallen palmetto leaves, but I knew he could not be less than seven feet long by his thickness, which was several inches. I doubt if I could have much more than spanned him with my two hands at any part of his visible length, about five feet, as he stretched from palm to palm. However, I did not try any such test. I was content to gaze at him with bulging eyes and watch him, in breathless silence, for fear he might make the first move. Nor was this study reassuring. It began with hopes that he might be merely one of the harmless big south Florida snakes. Some of these are found eight feet long and proportionately big round, and are looked upon with friendly favor by people who know them best, because they not only eat rats and other vermin but are fabled to kill and eat the poisonous snakes. The study ended in the conviction that here was none of these. I knew that I was looking upon a grandfather of rattlers, a diamond-back seven feet long, four inches thick, and stuffed with venom from his little wicked yellow eyes to his stubby tail. Almost any hunter of this region will show you seven-foot skins. Some have dens hung with them. Here was the real thing.