I. Newton 1
II. The Ether and Its Consequences 27
III. Einstein 41
IV. Appendix 81
Time, Space and Gravitation, by Prof. Einstein 88
Einstein's Law of Gravitation, by Prof. J. S. Ames 93
The Deflection of light by Gravitation and the
Einstein Theory of Relativity, by Sir Frank Dyson,
Prof. A. S. Eddington and Sir J. J. Thomson 112