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The Life of the Bee 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."

Huber has sought to explain this mystery by suggesting that the pressure of the bees' hooks and teeth may possibly produce slight projections, at regular intervals, on the opposite side of the comb; or that they may be able to estimate the thickness of the block by the flexibility, elasticity, or some other physical quality of the wax; or again, that their antennæ, which seem so well adapted for the questioning of the finer, less evident side of things, may serve as a compass in the invisible; or, lastly, that the position of every cell may derive mathematically from the arrangement and dimensions of the cells on the first row, and thus dispense with the need for further measurement. But these explanations are evidently in- 211