It is presumed that the results were corrected, if necessary, for the discharging action due to the ionized gas, although no direct mention of this is made in the paper by Seitz.

Strutt, Phil. Trans. A, p. 507, 1901.

Crookes, Proc. Roy. Soc. 1902. Chem. News, 85, p. 109, 1902.

Mme Curie, C. R. 130, p. 76, 1900.

Rutherford, Phil. Mag. Feb. 1903. Phys. Zeit. 4, p. 235, 1902.

Becquerel, C. R. 136, p. 199, 1903.

Becquerel, C. R. 136, p. 431, 1903.

Des Coudres, Phys. Zeit. 4, No. 17, p. 483, 1903.

Becquerel, C. R. 136, p. 1517, 1903.

Bragg, Phil. Mag. Dec. 1904; Bragg and Kleeman, Phil. Mag. Dec. 1904.

Further experimental results bearing on this important question are given in an Appendix to this book.

Bakerian Lecture, Phil. Trans. A, p. 169, 1904.

Strutt, Phil. Mag. Aug. 1904.

J. J. Thomson, Proc. Camb. Phil. Soc. 13, Pt. I. p. 39, 1905. Nature, Dec. 15, 1904.

Rutherford, Nature, March 2, 1905. J. J. Thomson, Nature, March 9, 1905.