DR. A. SCOTT ON THE COMPOSITION OP WATER BY VOLUME. 
547 
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 
Fig. 2. 
A, Bulb for measuring gases. B, Tube for measuring residues. 
C, Manometer tube. U, Calibrated tube. 
Xoofh of a degree centigrade in the later series of experiments, hut only to i-yth 
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, 
4 A 2 
