Coefficients of the cubical expansion of ice, hydrated salts, solid carbonic acid, and other substances at low temperatures

The apparent specific gravities of boiling liquid oxygen which resulted from weighing in the liquid a series of metals and other substances were given in a lecture entitled “New Researches on Liquid Air,” printed in the Royal Institution ‘Proceedings’ for 1896. For instance, silver, calc spar, rock crystal, and iodide of silver gave the respective apparent densities 1·1278, 1·1352, 1·1316, and 1·1372. On correcting the weight of liquid displaced by each substance for contraction to — 182°·6—by calculating a Fizeau mean coefficient of expansion for the range of temperature employed, on the assumption that the parabolic formula might be legitimately extended to low temperatures,—it was found that the real density of liquid oxygen so deduced for all the bodies used was, as a mean, 1·137.