This book, first published in 1998, provides a history of the study of the tides over two millennia, from the primitive ideas of the Ancient Greeks to present sophisticated space-age techniques. Tidal physics has puzzled some of the world's greatest scientists and mathematicians: amongst many others, Galileo, Descartes, Bacon, Kepler, Newton, Bernoulli, Euler, Laplace, Young, Whewell, Airy, Kelvin, G. Darwin, H. Lamb, have all contributed to our understanding of tides. The volume is amply illustrated with diagrams from historical scientific papers, photographs of artefacts, and portraits of some of the subject's leading protagonists. The history of the tides is in part the history of a broad area of science and the subject provides insight into the progress of science as a whole: this book will therefore appeal to all those interested in how scientific ideas develop. It will particularly interest specialists in oceanography, hydrography, geophysics, geodesy, astronomy and navigation.