“To weave its web, each kind of spider has its own method of procedure, according to the kind of game it is going to hunt, the places it frequents, and according to its particular inclinations, tastes, and instincts. I will merely tell you a few words about the epeiræ, large spiders magnificently speckled with yellow, black, and silvery white. They are hunters of big game,—of green or blue damsel-flies that frequent the water-courses, of butterflies, and large flies. They stretch their web vertically between two trees and even from one bank of a stream to the other. Let us examine this last case. “An epeira has found a good place for hunting: the dragon-flies, or blue and green damsel-flies, come and go from one tuft of reeds to another, sometimes going up, sometimes down the stream. Along its course are butterflies also, and horse-flies, or large flies that suck blood from cattle. The site is a good one. Now, then, to work! The epeira climbs to the top of a willow at the water’s edge. There it matures its plan, an audacious one, the execution of which seems impossible. A suspension bridge, a cable which serves as support for the future web, must be stretched from one bank to the other. And observe, children, that the spider cannot cross the stream by swimming; it would perish by drowning if it ventured into the water. It must stretch its cable, its bridge, from the top of its branch without changing place. Never has an engineer found himself in such difficulties. What will the little creature do? Put your heads together, children; I am waiting for your ideas.” “Build a bridge from one side to the other, without crossing the water or moving away from its place? If the spider can do that it is cleverer than I am.” Thus spoke Jules. “Than I, too,” chimed in his brother. “If I did not already know,” said Claire, “since you have just told us, that the spider does accomplish it, I should say that its bridge is impossible.” Mother Ambroisine said nothing, but by the slackening of the tick-tack of her needles, every one could see that she was much interested in the spider’s bridge.