February 17, 192 1] 



NATURE 



811 



tivity affirms is a universe in which there is no 

 absolute space-time order ; in which every event 

 is exhausted in the contradictory descriptions of 

 observers in different systems of reference ; in 

 which systems of reference are ultimate without 

 being absolute, and relative without being extern- 

 ally conditioned ; in which every system is self- 



sufficing and contains its own norm, a norm 

 which remains constant by changing as the system 

 changes. In such a universe, are mathematics 

 and physical science possible? The relativist 

 claims that they are capable of infinitely greater 

 precision and consistency than they could ever 

 attain while obstructed by the old concept. 



Bibliography of Relativity. 



ABIBL10GR.\PHY of all books, pamphlets, 

 papers, articles, and other publications on the 

 subject of relativity has been prepared by Dr. H. 

 Forster Morley, director of the International Cata- 

 logue of Scientific Literature. The list includes nearly 

 650 titles, arranged in chronological order from 1886 

 to the end of last year. It would occupy about thirty 

 columns of Nature, and, much as we should like to 

 print it in full, limitations of space render this im- 

 possible. We have, therefore, extracted from Dr. 

 Morley 's bibliography the titles of published books 

 and pamphlets upon relativity and related subjects, 

 and also the references to articles, notes, or other 

 contributions which have appeared in the pages of 

 Nature. The complete bibliography is so valuable 

 that we trust it will be published in full either by a 

 scientific society or in a leading work on relativity. 

 Dr. R. VV. I^wson has kindly added the titles of a 

 number of German works. 



Books and Pamphlets. 



LorcBtz, H. \. La th^orie electromagn^tique de 

 Maxwell et son application aux corps mouvants. 

 Leyden (E. J. Brill) 1892. 



Lorenlz, H. A. Versuch einer Theorie der elek- 

 trischen und optischcn I->scheinungen in bewegten 

 Kiirpern. Leyden (E. J. Brill) 1895. 



I^balschewtky, N. \. Zwei geomctrische Abhand- 

 lunjjcii. Uebcrsetzt von F. Engel. Leipzig 1898. 



W«odi, Frederick Shenstone. Forms of Non- 

 Euclidean Space. The Boston Colloquium Lectures. 

 New York 1905 (31-74). 



Micbelsoo, A. A. Light Waves and their Uses. 

 Chicago 1907. 



Lecomn, L<5on. La m^canique. Paris (Flam- 

 m.'irion) 1909. 



Lerentz, II. .\. The Theory of Electrons. Lectures 

 <lcliviered in Columbia University 1906; Leipzig 

 (Teubner) 1909 (iv+332). 



Mlnkewtkl, Hermann. Zwei .\bhandlungcn iiber die 

 Grundglrirhunpcn der Eloktro<lyn:imik. Mit einem ! 

 EinfUhningswort von Otto Blumenthal. Leipzig und | 

 Berlin (B. G. Teubner) 1910 (82). I 



Plaflck, Max. .MIgemeines Dynamik-Prinzip der ! 

 Rclativitat. \ln: Planck, .^cht Vorlesungrn iiber 

 thcoretische Ph>sik.] Leipzig (S. Hirrel) 1910 

 (iJO-27). 



Polncari, Henri. La m6caniaue nouvelle. f/n; 

 I itliemafisrhc Vorlcsungen an der I'niversitat Got- ! 

 unjjen. IV.) Leipzig und Berlin (B. G. Teubner) 

 1910 (i9ocj] (49-58). 



Wlnkelmann, A. Handbuch der rhv-ik. t Aufl. 

 Optik. Leipzig (J. A. Barth). 



BmioU, R. IVhfr die Pnrallelcnthooric und iiber 

 di<- nirhteuklidischen Geomelricn. I^ipzig u. BiTlin 

 (Teubner) I911 (246-363). 



L«w, M«x, D.n Relativitiitsprinzip. (Die Wi««cn- 

 srhaft H. 38.) Braunschweig (F. Vieweg & S.) 1911 

 (x-t-aoS). 



NO. 2677, VOL. 106] 



Kobb, Alfred \. Optical Gieometry of Motion. 

 Cambridge (W. HefTer) 191 1. 



Sommerville, D. M. J. Bibliography of Non- 

 Euclidean Geometry, including the Theory of Paral- 

 lels, the Foundations of Geometry and Space of n 

 Dimensions. London (Harrison) 191 1 (sii-(-404). 



Woods, Frederick Shenstone. Non-Euclidean Geo- 

 metry. London igii. 



Boaola, Roberto. Non-Euclidean Geometn,'. Trans- 

 lated by H. S. Carslaw. Chicago (Open Court Pub. 

 Co.) 1912 (xii-l-268). 



Borgman, Ivan Ivanovitch. [New Ideas in Physics. 

 .\n .'Xperiodic Scientific Series. No. 3 . The Principle 

 of Relativity (Russian).] St. Petersburg 1912 (172-76). 

 With index of literature. 



Carlebach, Jcweph. Die Geschichte des Tragheits- 

 satzes im Lichte des Relativiliitsprinzips. (Wiss. 

 Beilage zum Jahresbericht der Slargaretenschule. 

 Ostcrn 1912.) Berlin (Wiedmann) 1912 (24). 



Ehrentest, Paul. Zur Krise der Lichtather-Hypo- 

 these. Rede. Berlin (J. Springer) 1913 (23); Leyden 

 (Eduard IJdo) 1912 (24). 



Hcnscbke, Erich. Ueber eine Form des Prinzips der 

 kleinsten Wlrkung in der Elektrodynamik des 

 Relativprinzips. Diss. Berlin. Leipzig (J. k. Barth) 

 1912 (88). 



HnntiDgton, Edward V. .V New .\pproach to the 

 Theory of Relativity. Festschrift Heinrich Weber. 

 Leipzig 1912 (147-69). 



Schottky, Walter. Zur relatfvtheoretischen Ener- 

 getik und Dynamik. I. II. Diss. Berlin. Weida i. 

 Th. (Thomas & Hubert) 1912 (iii-f95). 



Einstein, A., und Grossmann, M. Entwurf einer 

 verallgemeinerten Relativitiitstheorie und einer Theorie 

 der Gravitation. Leipzig (Teubner) 1913 (38). 



Planck, Max. Das Prinzip der Erhaltung der 

 Energie. Leipzig (Teubner) 191.) (xvi-f278). Third 

 edition. 



Poiflcari, Henri. Science and Method ; also contained 

 in The Foundations of Science. New York (Science 

 Press) 19 13. 



Carmlchael, Robert Daniel. The Theory of Rela- 

 tivity. (Mathematical Monographs, No. 12.) New 

 York (J. Wiley); London (Chapm.m & Hall) 1913 (74). 



Cares, P. The Principle of Relativity in the Light 

 of the Philosophy of Science. Chicago and London 

 (Open Court Pul). Co.) 1913 (105). 



Gandlllot, M. Note sur une Illusion de relativity. 

 Paris (Gauthher-Villars) 1913 (88). 



Lane, Max. Das Relativitiitsprinzip. 2. verm. Aufl. 

 Braunschweig (F. Vieweg & S.) 1913 (xii + 272). 



Lorenlz, Hcndrik .Vntoon. Het rolatiriteits-bcginsel. 

 fLe principe de la relativity. Trois conferences fnites 

 dans la fondafion Tcylcr.] Haarlem (de Erven 

 Lossjes) [1913) (60). 



Lorenlz, Hendrik Antoon. EInsleIn, Albert, und 

 Minkowski, Hermann. Das Relativitatsprinzip. Eine 

 Sammlung von .\bhandlungen mit .\nmerkunc von 



