it trembled and swayed in the current of air the black spot trembled with it or flew swiftly over the bright green surfaces, and was seldom at rest. Now, as I sat looking down on the leaves and the small dancing shadow, scarcely thinking of what I was looking at, I noticed a small spider, with a flat body and short legs, creep cautiously out on to the upper surface of a leaf. Its pale red colour barred with velvet black first drew my attention to it, for it was beautiful to the eye; and presently I discovered that this was no web-spinning, sedentary spider, but a wandering hunter, that captured its prey, like a cat, by stealing on it concealed and making a rush or spring at the last. The moving shadow had attracted it, and, as the sequel showed, was mistaken for a fly running about over the leaves, and flitting from leaf to leaf. Now began a series of wonderful manœuvres on the spider's part, with the object of circumventing the imaginary fly, which seemed specially designed to meet this special case; for certainly no insect had ever before behaved in quite so erratic a manner. Each time the shadow flew past, the spider ran swiftly in the same direction, hiding itself under the leaves, always trying to get near without alarming its prey; and then the shadow would go round and round in a small circle, and some new strategic move on the part of the hunter would be called forth. I became deeply interested in this curious scene; I began to wish that the shadow would remain quiet for a moment or two, so as to give the hunter a chance. And at last I had my wish: the shadow was almost motionless, and the spider moving towards it, yet seeming not to move,
