The Tides, by Sir William Thomson (Lord Kelvin)

<p>We to-day know that there is a direct relation between the moon and tides. When Julius Cæsar went to conquer Britain his transports were wrecked because he did not know the tides on the English coast; a knowledge of which might have changed the whole course of history. (Volume 30, Harvard Classics)</p> <p>Kelvin delivers lecture on "Tides," Aug. 25, 1882.</p>