A regularity observed in the second spark spectrum of iodine

Turner,Phys. Rev., 1926,27, 396. Evans,P.R.S., 1931,A 133, 417. Deb,P.R.S., 1933,A 139, 380. Saha,Phil. Mag., June 1927, the chart facing p. 1273. Phys. Rev., Jan. 1927, 790–793. Phil. Mag., June 1927, 1269–70. Ann. de Physique, 1929,11, 141–166. P.R.S., 1929,A 122,} 144. Phys. Rev., 1928,31, 34. P.R.S., 1930,A 127, 197. Proc. Lond. Phys. Soc.,39, 153. Phys. Rev.,30, 586. Ind. Jour. Phys.,3, 443. Ind. Jour. Phys.,3, 67–76. Bulletin of the Academy of Sciences of U.P. (India),1, 36. Nature, Jan. 31, 1931,127, 165. Atomic Energy States by Bacher and Goudsmit, p. 97. Memoirs of the College of Sciences, Kyoto Imperial University, Series A,12, 275. Zeits. f. Phys., 1930,60, 20.