There are numerous historical records telling about the overflow of the sea in China. But most of them are concluded to have occurred by wind, and very few of them to have been caused by the earthquakes. I have found with difficulty no more than six records of tidal waves among many historical documents covering over 2, 000 years. The first occurred in Lai-chou Bay _??__??__??_ of Shan-tung Peninsula _??__??__??__??_, in the year 173. The second, at Chia-ting Hsien _??__??__??_, Lo-tien Chên _??__??__??_, Pao-shan Hsien _??__??__??_, facing the mouth of the river Yang-tse _??__??__??_, in 1509. The third, at three Hsiens _??_, Ch'êng-hai _??__??_, Ch'ao-yang _??__??_ Chieh-yang _??__??_, in Kwang-tung Province _??__??__??_, in 1640. The fourth in 1670, at the same places as in the year 1509. The fifth, at Chi-lung _??__??_, Formosa A _??__??_, in 1867. The last, at T'ung-an Hsien _??__??__??_, Fu-kien Province _??__??__??_, in 1917. See the map on p. 160.