Comments on "Excess molar enthalpies, molar heat capacities, densities, viscosities, and refractive indices of dimethyl sulfoxide+1-propanol at (288.15, 298.15, and 308.15) K at normal pressures" (Fabio Comelli, Romolo Francesconi, Adriana Bigi, and Katia Rubini, J-Chem. Eng. Data, 2006, 51, 1711-1716)