x x v i i i L I S T O F T E X T S 418. To Paul Ehrenfest, 11 January 1925 419. To Leo Kohn, 12 January 1925 420. From Paul Langevin, 13 January 1925 421. From Auguste Piccard,13 January 1925 422. Statement for Letters from Russian Prisons, ca. 16 January 1925 423. Introductory Letter to Letters from Russian Prisons, ca. 16 January 1925 Letters from Russian Prisons, Consisting of Reprints of Documents by Political Prisoners in Soviet Prisons, Prison Camps and Exile, and Reprints of Affidavits Concerning Political Persecution in Soviet Russia, Official Statements by Soviet Authorities, Excerpts from Soviet Laws Pertaining to Civil Liberties, and Other Documents. With Introductory Letters by Twenty-Two Well-Known European and American Authors [Alexander Berkman, ed.]. Published for The International Committee for Political Prisoners. New York: A. & C. Boni, 1925 424. To Otto Blumenthal, 20 January 1925 425. “Remark on P. Jordan’s Paper ‘On the Theory of Quantum Radiation,’” 22 January 1925 “Bemerkung zu P. Jordans Abhandlung „Zur Theorie der Quantenstrahlung“” Zeitschrift für Physik 31 (1925) 426. From Satyendra Nath Bose, 27 January 1925 427. “On the Quantum Theory of the Ideal Gas,” 29 January 1924 “Zur Quantentheorie des idealen Gases” Preußische Akademie der Wissenschaften (Berlin). Physikalisch- mathematische Klasse. Sitzungsberichte (1925) 428. To Robert Eisler, 31 January 1925 429. From Otto Blumenthal, 31 January 1925 430. To Georgi I. Manev, 3 February 1925 431. To Willem Julius, 5 February 1925 432. From Henri Bergson, 5 February 1925 433. From Erwin Schrödinger, 5 February 1925 434. From Adolf Smekal, 5 February 1925 435. From Theodor Kaluza, 6 February 1925 436. To Elsa Einstein, 10 February 1925 437. From David Hilbert, 14 February 1925 438. “Message,” 17 February 1925 “Botschaft” Jüdische Rundschau 30, no. 14 (17 February 1925)