516 
Proceedings of the Royal Society 
does to carbonic oxide and carbonic acid ; and the manner in which 
hypo-sulphuric acid is formed by the reaction of sulphurous acid 
on peroxide of manganese further confirms this view of its con- 
stitution. This reaction may be represented thus — 
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1 1 n 
®=0 0 =® 
Before the reaction, 
so that hypo-sulphuric acid is 
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® © 
After. 
just as oxalic acid is 
By means of the same assumption we get a simple explanation 
of the relations of the sulphites to sulphates, and to hypo-sulphites. 
Thus— 
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Sulphite. Sulphate. Hypo-sulphite, 
