Page:Philosophical Transactions of the Royal Society A - Volume 184.djvu/560

Rh contain .0395 grm. of mercury per millim. length. The capillarity correction, due to the difference in diameter between the manometer tube C and the tube D, amounted to 3.9 millims., and between B and C to .1 millim. Temperatures were read to



$1⁄100$th of a degree centigrade in the later series of experiments, but only to $1⁄10$th previously, by means of the thermometer G, after thorough mixture by means of a stirrer not shown in the figure. All heights were referred to the standard scale F,