Taking for ice and water the following numerical data, L = 674.7, 6 74.7, L 1 =595.2, L r = 79.5, R = o 11 03 cal./**deg**., po = 4.61 mm., s-S = 519 cal./**deg**., and assuming the specific heat of ice to be equal to that of steam at constant pressure (which is sufficiently approximate, since the term involving the difference of the specific heats is very small), we obtain the following numerical formulae, by substitution in (23), Ice..

Acetone is a colourless mobile liquid of pleasant smell, boiling at 56.53°C., and has a specific gravity 0.819 (0 **deg**.