XC.—The vapour pressures, molecular volumes, and critical constants of ten of the lower esters

THE critical and other constants of a number of the esters (ethereal salts) have been determined by several observers, but the results are by no means concordant.As an example, we may take ethylic acetate, which we found one of the least difficult substances to obtain in a pure state.The boiling points, specific gravities at 0", and the critical constants obtained by various experimenters are tabulated below. Boiling Points.71.0" ......