Measurements of the specific heat of Ru have been performed in the temperature range 2-11.5 K. Values for the Sommerfeld γ and the Debye Θ of 3.10 ± 0.02 mJ/mole K2 and 555±6 K were obtained. Deviations of Θ from its limiting value were observed above 9 K. This value of Θ is in good agreement with the acoustically determined value, thus removing the discrepancy between calorimetric determinations of Θ and the acoustic results
