Methuen & Co. Ltd. London. 1946.
FOURTEENTH ENGLISH EDITION. Octavo. (7.4 x 5.1 inches). Portrait frontis and five line diagrams within the text. A little foxing to the edges of the pages but overall a very good copy in the publishers fawn cloth with black lettering to the spine. In the original dustwrapper which has some chipping to the edges but is generally clean and bright. ----- Contains a bibliography of selected works on Relativity.