[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.