It is by no means an absurdity to append to the silk-worm an account of the spider, a creature which is worthy of our especial admiration. There are numerous kinds of spiders, however, which it will not be necessary here to mention, from the fact of their being so well known. Those that bear the name of _phalangium_ are of small size, with bodies spotted and running to a point; their bite is venomous, and they leap as they move from place to place. Another kind, again, is black, and the fore-legs are remarkable for their length. They have all of them three joints in the legs. The smaller kind of wolf-spider[90] does not make a web, but the larger ones make their holes in the earth, and spread their nets at the narrow entrance thereof. A third kind, again, is remarkable for the skill which it displays in its operations. These spin a large web, and the abdomen suffices to supply the material for so extensive a work, whether it is that, at stated periods the excrements are largely secreted in the abdomen, as Democritus thinks, or that the creature has in itself a certain faculty of secreting[91] a peculiar sort of woolly substance. How steadily does it work with its claws, how beautifully rounded and how equal are the threads as it forms its web, while it employs the weight of its body as an equipoise! It begins at the middle to weave its web, and then extends it by adding the threads in rings around, like a warp upon the woof: forming the meshes at equal intervals, but continually enlarging them as the web increases in breadth, it finally unites them all by an indissoluble knot. With what wondrous art does it conceal the snares that lie in wait for its prey in its checkered nettings! How little, too, would it seem that there is any such trap laid in the compactness of its web and the tenacious texture of the woof, which would appear of itself to be finished and arranged by the exercise of the very highest art! How loose, too, is the body of the web as it yields to the blasts, and how readily does it catch all objects which come in its way! You would fancy that it had left, quite exhausted, the thrums of the upper portion of its net unfinished where they are spread across; it is with the greatest difficulty that they are to be perceived, and yet the moment that an object touches them, like the lines of the hunter’s net, they throw it into the body of the web. With what architectural skill, too, is its hole arched over, and how well defended by a nap of extra thickness against the cold! How carefully, too, it retires into a corner, and appears intent upon anything but what it really is, all the while that it is so carefully shut up from view, that it is impossible to perceive whether there is anything within or not! And then too, how extraordinary the strength of the web! When is the wind ever known to break it, or what accumulation of dust is able to weigh it down?