[115] Phys. Zeitschr., XVI (1915), 10. [116] Ann. d. Phys., XLVI (1915), 261. [117] Phys. Zeitschr., XII (1911), 162. [118] Ibid., XVI (1915), 316. [119] Phys. Rev., II (1913), 138. [120] See Phys. Rev., II (1913), 134-35. [121] Phys. Rev., XXXII (1911), 389. [122] See Schidlof et Karpowicz, Comptes rendus, CLVIII (1914), 1912. [123] E. Schmid, Wien. Akad. Ber., CXXIX (1920), 813, and ZfP, V (1921), 27. [124] R. Bär, in a series of articles recently summarized in Die Naturwissenschaften, Vols. XIV and XV, 1922, has emphasized this point. His data serve merely as a new check upon the work found in our preceding tables. [125] “Die bei grösseren Partikeln unter gewissen Umständen bei gleicher Art der Erzeugung häufig wiederkehrenden höheren Quanten waren dann etwa als stabilere räumliche Gleichgewichtsverteilungen dieser Sub-electron anzusehen, die sich unter gewissen Umständen ergeben.”—Wien. Ber., CXXIII, 59. [126] Their whole case is summarized in the tables in Ann. d. Phys., XLIV (1914), 693, and XLVI (1915), 292, and it is recommended that all interested in this discussion take the time to glance at the data on these pages, for the data themselves are so erratic as to render discussion needless. [127] “Wie ich in meinen früheren Publikationen erwähnt habe, zeigen die ultramikroskopischen Metallpartikel, unmittelbar nach der Erzeugung beobachtet, eine viel lebhaftere Brownsche Bewegung als nach einer halben Stunde.”—Phys. Zeitschr., XII, 98. [128] In my own opinion this is a conclusion contrary to fact, since in a recent paper (see Phys. Rev., July, 1923) I have fully established the “Complete Law of Fall.” [129] II (1913), 117. [130] Ibid., CCC (1911), 389-90. [131] The results shown in Fig. 13 do not lay claim to the precision reached in those recorded in Table X and Fig. 10. No elaborate precautions were here taken in the calibration of the Hipp chronoscope and the voltmeter, and it is due to slight errors discovered later in these calibrations that the slope of line 1 in Fig. 13 is not quite in agreement with the slope in Fig. 10. [132] Zeit. für Phys. Chem., LXXXVII (1914), 40. [133] Inaugural Dissertation von Arne Westgren, Untersuchungcn über Brownsche Bewegung, Stockholm, 1915. [134] R. Bär, “Der Streit um das Elektron,” Die Naturwissenschaften, 1922. [135] R. A. Millikan, Phys. Rev., XXXII (1911), 397. [136] J. J. Thomson, Phil. Mag., XI (1881), 229. [137] Bucherer, Annalen der Physik, XXVIII (1900), 513. [138] The inadequacy in this argument arises from the fact that Einstein’s Theory of Relativity requires that all mass, whether of electromagnetic origin or not, varies in just this way with speed. [139] Bragg, Phil. Mag., VIII (1904), 719, 726; X (1905), 318; XI (1906), 617. [140] Phil. Mag., XXI (1911), 669.