Page:Quarterly Journal of the Geological Society of London, vol. 33.djvu/71

Rh but that at Chesil the driftage is due to the flow-tide current augmented by waves caused by the prevailing winds, while at Cahore the driftage is solely due to the flow-tide currents, its effect being modified by adverse wind-waves; and that the sorting of the pebbles on Chesil beach is probably principally caused by the progressive increase in the velocity of the tidal current as it approaches the nodal or hinge-line of the tide in the English Channel.

Reduction of portion of chart, Ireland, sheet XV., Wexford Bay and adjoining coast-line, the Cahore shingle beach, and site of the Cahore lagoon.