An analysis has been made of the discrepancies between the hfs and isotope shift results for Hg<sup>194</sup>, Hg<sup>195</sup>, and Hg<sup>195<i>m</i></sup> of Kleiman and Davis [J. Opt. Soc. Am. <b>53</b>, 822 (1963)] and our data, particularly in view of the importance of these results for our interpretation of the odd-even staggering effect in isotope shift [W.J.T. III and H.H.S., Phys. Rev. Letters <b>8</b>, 436 (1962)]. Our hfs results have been confirmed by the more precise level-crossing experiments of W. W. Smith [Bull. Am. Phys. Soc. <b>8</b>, 9 (1963)]. Errors in the work of Kleiman and Davis have been attributed, in part, to the presence of Hg<sup>197</sup> and Hg<sup>197<i>m</i></sup> in their sources. Experimental results are shown for the Hg<sup>194</sup> isotope shift. We find Hg<sup>194</sup>-Hg<sup>196</sup> isotope shift=0.146±0.010 cm<sup>-1</sup>, and a preliminary value Hg<sup>193<i>m</i></sup>-Hg<sup>195<i>m</i></sup> shift=0.150 cm<sup>-1</sup>. These results lend further support to our hypothesis on the causes of odd-even staggering in isotope shift.
W. J. TOMLINSON III and H. H. STROKE, "Hyperfine Structure, Isotope, and Isomer Shifts in Hg193m, Hg194, Hg195m, and Hg195—Comments on the Paper of Kleiman and Davis," J. Opt. Soc. Am. 53, 828-830 (1963)