"What a mighty tide!" "Why should it rush in here with so much greater violence than it does down on the coast of Massachusetts or at Long Branch ?" questioned Wade.

"How do you explain it, captain ?" "It is because the coasts, both above and below the mouth of the straits, converge after the manner of a tunnel.

The tidal wave from the Atlantic is thus accumulated, and pours into the straits with much more than ordinary violence.

The same thing occurs in the Bay of Fundy, where they have very high tides.

But I had no idea of such violence," he added, "or I shouldn't have risked the schooner so near the rocks.