352 THE LATER JOURNEY
E19. , PAW, 1927, p. 23.
E20. , PAW, 1927, p. 26.
E21. , letter to P. Ehrenfest, August 23, 1926.
E22. , letter to P. Ehrenfest, September 3, 1926.
E23. , letter to H. A. Lorentz, February 16, 1927.
E24. and W. Mayer, PAW, 1931, p. 541.
E25. , letter to P. Ehrenfest, September 17, 1931.
E26. , Science 74, 438 (1931).
E27. and W. Mayer, PAW, 1932, p. 130.
E28. , letter to W. Pauli, January 22, 1932.
E29. and P. Bergmann, Ann. Math. 39, 683 (1938).
E30. , V. Bargmann, and P. Bergmann, T. von Kdrmdn Anniversary Volume, p.
- California Institute of Technology, Pasadena, 1941.
E31. , letter to H. Weyl, April 8, 1918.
E32. , letter to H. Weyl, April 15, 1918.
E33. —, PAW, 1918, p. 478.
E34. , PAW, 1921, p. 261.
E35. —, PAW, 1923, p. 32.
E36. , PAW, 1923, p. 76.
E37. —, PAW, 1923, p. 137.
E38. , Nature 112, 448 (1923).
E39. A. S. Eddington, Proc. Roy. Soc. 99, 104 (1921).
E40. A. Einstein, letter to H. Weyl, June 6, 1922.
E41. , letter to H. Weyl, May 23, 1923.
E42. , letter to H. Weyl, May 26, 1923.
E43. , appendix to A. S. Eddington, Relativitdtstheorie. Springer, Berlin, 1925.
E44. , PAW, 1925, p. 414.
E45. , letter to P. Ehrenfest, August 18, 1925.
E46. —, letter to P. Ehrenfest, September 18, 1925.
E47. , letter to P. Ehrenfest, September 20, 1925.
E48. , Math Ann. 97, 99 (1927).
E49. , letter to P. Ehrenfest, January 21, 1928.
E50. , PAW, 1928, p. 217.
E51. , Math Ann. 102, 685 (1929).
E51a. , PAW, 1928, p. 224.
E52. , PAW, 1929, p. 2.
E53. A. S. Eddington, letter to A. Einstein, February 11, 1929.
E54. A. Einstein, PAW, 1929, p. 156.
E55. , PAW, 1930, p. 18.
E56. Festschrift Prof. Dr. A. Stodola p. 126. Fussli, Zurich, 1929.
E57. , Science 71, 608 (1930).
E58. , Ann. Inst. H. Poincare 1, 1 (1930).
E59. , Die Karaite, 1930, pp. 486-7.
E60. , Forum Philosophicum 1, 173 (1930).
E61. , The Yale University Library Gazette 6, 3 (1930).
E62. , Die Quelle 82, 440 (1932).
E63. A. S. Eddington, Nature 123, 280 (1929).
