Part 13

The Ether versus Relativity. Fortnightly Review, Jan., 1920.

Admirable article by a courteous opponent.

POINCARÉ, HENRI.

Science and Method; also contained in The Foundations of Science. New York: The Science Press, 1913.

RUSSELL, BERTRAND.

The Relativity Theory of Gravitation. English Review, Dec., 1919.

A clear explanation by one of the foremost of British philosophers.

THOMSON, J.

Deflection of Light by Gravitation and the Einstein Theory of Relativity. Scientific Monthly, Garrison, N. Y., 1920, vol. 10, p. 79-85, Jan.

VARIOUS WRITERS.

The Fourth Dimension Simply Explained. New York: Munn and Co., 1910.

The essays submitted for a prize offered by the Scientific American. Twenty-two mathematicians try their best to justify the title and if they do not succeed it is not their fault.

WETZEL, REINHARD A.

The New Relativity in Physics. Science, New York, 1913. New ser., vol. 38, pp. 466-474.

Explains the relativity of time with diagrams and references to the literature.

Other articles of general interest may be found in:

Science: July 16, 1909; May 20, 1910; June 20, 1913; April 24, 1914; Dec. 5, 1919.

Scientific American Supplement: April 7, 1917; Dec. 17, 1910.

London Nation: Nov. 14 and Dec. 27, 1919.

London Times: Nov. 8, 18, and 25, Dec. 4 and 19, 1919.

London Nature: Almost every number in Nov., Dec., 1919, Jan., Feb., 1920.

New York Times: Nov. 7 and 16, Dec. 21, 1919.

New York Sun: Nov. 10, 1919.

The New Republic: Jan. 21, 1920.

For the mathematical reader:

EINSTEIN, ALBERT.

Bases physiques d’une théorie de la gravitation. Société Astronomique de France. Bulletin, Paris, 1917, Tome 31, pp. 407-411.

Die formale Grundlage der allgemeinen Relativitätstheorie. Königlich Preussischen Akademie der Wissenschaften. Sitzungsberichte, Berlin, 1904 (Juli-Dez.), pp. 1030-1085.