DR. A. SCOTT OR THE COMPOSITIOR OP WATER BY VOLUME. 
553 
Hydrogen as before— 
Volume 45'6 = 3823’5 Temperature = 15'4° C. 
millims. millims 
Height of mercury in manometer tube on scale = 115'8 on cathetometer = 7'1 
,, „ volume tube on scale . = 115*5 ,, = 6*8 
Correction .... = + 0*3 +0*3 
millims. 
Barometer 777*6 - 25*7 .= 751*9 
Pressure of aqueous vapour . . . . = 13*0 
Pressure of hydrogen = 751*9 + '3 — 13*0 . = 739*2 
Residue (of oxygen)— 
Volume 8*6 = 56*5 Temperature = 15*4° C. 
millims. millims. 
Height of mercury in manometer tube on scale =491*9 on cathetometer =■ 10*0 
,, ,, Amlume tube on scale . = 484*7 ,, = 2*8 
Correction.+ 7*2 +7*2 
millims. 
Barometer = 777*7 — 25*4 . . . . = 752*3 
Pressure of aqueous vapour . . . . = 13*0 
Pressure of gas = 752*3 + 7*2 — 13*0 . . . = 746*5 
On analysis of residue *6 of unabsorbable gas remained after treatment with 
potassium hydrate and pyrogallol; no carbon dioxide being detected. 
Total oxygen volume reduced to 0° C. and 760 millims. pressure, becomes 
3881*0 X 
Residual volume 
Hydrogen volumes become 
millims. 
7.S-R X/ 9 7.SO 
7 a 0 0 ^ ‘2 S S i 
. = 3566*4 
740-5 y 2 7 3 0 
7 0 0 0^ 2 8 8-4 
. = 52*5 
*6 
Oxygen in residue . 
. = 51*9 
738-0 2 730 
7 0 0-0 2 8 8-3 5 * 
7 3 9-2 V 2 7 3 0 
7000 '' 2 88-4 
. = 3514*4 
. = 35*30*2 
Total hydrogen volume 
. = 7034*6 
4 B 
MDCCCXCTII.—A. 
