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The Life of the Bee these are to be enlarged or lengthened; though it must be admitted that in this case the "blind building instinct" fails signally to account for their demolishing in order that they may rebuild, or undoing what has been done that it may be done afresh, and with more regularity. I will content myself also with a mere reference to the remarkable experiment that enables us, with the aid of a piece of glass, to compel the bees to start their combs at a right angle; when they most ingeniously contrive that the enlarged cells on the convex side shall coincide with the reduced cells on the concave side of the comb. 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 208