But before finally quitting this subject let us pause, though it be but for an instant, and consider the mysterious fashion in which they manage to act in concert and combine their labour, when simultaneously carving two opposite sides of a comb, and unable therefore to see each other. Take a finished comb to the light, fix your eyes on the diaphanous wax; you will see, most clearly designed, an entire network of sharply cut prisms, a whole system of concordances so infallible that one might almost believe them to be stamped on steel. I wonder whether those who never have seen the interior of a hive can form an adequate conception of the arrangement and aspect of the combs. Let them imagine--we will take a peasant's hive, where the bee is left entirely to its own resources--let them imagine a dome of straw or osier, divided from top to bottom by five, six, eight, sometimes ten, strips of wax, resembling somewhat great slices of bread, that run in strictly parallel lines from the top of the dome to the floor, espousing closely the shape of the ovoid walls. Between these strips is contrived a space of about half an inch, to enable the bees to stand and to pass each other. At the moment when they begin to construct one of these strips at the top of the hive, the waxen wall (which is its rough model, and will later be thinned and extended) is still very thick, and completely excludes the fifty or sixty bees at work on its inner face from the fifty or sixty simultaneously engaged in carving the outer, so that it is wholly impossible for one group to see the other, unless indeed their sight be able to penetrate opaque matter. And yet there is not a hole that is scooped on the inner surface, not a fragment of wax that is added, but corresponds with mathematical precision to a protuberance or cavity on the outer surface, and vice versa. How does this happen? How is it that one does not dig too deep, another not deep enough? Whence the invariable magical coincidence between the angles of the lozenges? What is it tells the bees that at this point they must begin, and at that point stop? Once again we must content ourselves with the reply, that is no reply: "It is a mystery of the hive."