DR. A. SCOTT ON THE COMPOSITION OP WATER BY VOLUME. 
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carbon dioxide vanished as an ordinary impurity, and. the total impurity fell away to 
a very small amount indeed. 
In the following Tables the following data are given :— 
Column A gives the number of the experiment, 
,, B ,, ,, date on which it was performed. 
,, C „ „ hydrogen volume as measured and corrected to 0°C+ 760millims. 
D „ „ oxygen 
„ H ,, ,, hydrogen in residue. 
„ 0 „ „ oxygen „ 
,, N „ ,, impurity, determined by potash and pyrogallol. 
,, Pt. ,, ratio of combining volume of hydrogen to that of oxygen when 
the impurity was assumed to be equally distributed in both 
S ,, ,, ratio of combining volume of hydrogen to that of oxygen when 
the impurity was supposed to be all in the hydrogen. 
T ,, ,, source of the hydrogen. 
W ,, „ „ ,, oxygen. 
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