Using the apparatus for the measurement of gaseous diffusion coefficients D by the Stefan method described in the first report, the diffusion coefficient of diethyl ether vapor into dry air was measured at 298.15 K (25°C)and at atmospheric pressure. The diffusion path lengths L(≅ 80×10^-3 m, 120×10^-3 m, 160×10^-3 m) and the air flow rates Q (0.8×10^-6 m³s^-1 -42×10^-6 m³s^-1 (50 cm³min^-1-2500 cm³min^-1)) were systematically changed as in the first report. A loose polyester cotton plug was inserted into the horizontal tubing just upstream of the mouth of the evaporation tube to straighten air flow. The present results were compared with those in the first report obtained at 303.15 K (30°C). The air flow rate Q suitable to the measurement (5×10^-6 m³s^-1 -16×10^-6 m³s^-1 (300 cm³min-1000 cm³min^-1)) was found to be lower than that for 303.15 K. The range of the air flow rate Q suitable to the measurement was narrowed with increasing diffusion path length L. Both the present experimental value (D = 0.091×10^-4 m²s^-1) and that at 303.15 K in the first report agree well with the extrapolation of our experimental data obtained by the Taylor dispersion method to lower temperature.

By using simultaneously the magnetic levitation technique and the transient short hot wire method, thermal conductivity and diffusivity of hen egg-white lysozyme (HEWL) crystals were measured for the first time. In order to attach the HEWL crystals onto the wire, crystal growth was carried out at the air-liquid interface of the solution by the magneto-Archimedes effect. Gadolinium chloride (a paramagnetic subject) was used as a precipitant agent of crystallization. The thermal conductivity and diffusivity of the HEWL crystals at the applied magnetic field (H) of μ₀H = 4.0 T and the temperature of 17.2 °C were determined to be 0.410 W/(m·K) and 3.77 × 10^-8 m²/s 14 h later from the start of the crystal growth, and 0.438 W/(m·K) and 5.18 × 10^-8 m²/s 20 h later, respectively. In this measurement, the concentrations of HEWL and GdCl₃ were 6.53 wt% and 0.362 mol/kg, respectively, and the pH was 3.30.