of carbonic Oxide and Chlorine. 147 
the same formation of the butter of zinc; but instead of car^ 
bonic oxide being produced, carbonic acid was formed ; and as 
usual, there was no change of volume. 
The protoxide of antimony fused in the gas rapidly decom- 
posed it; the butter of antimony and the infusible peroxide 
were formed ; there was no change of the volume of the gas, 
and the residual gas was carbonic oxide. 
Sulphur and phosphorus sublimed in the gas, produced no 
apparent change ; the volume of the gas was unaltered, and 
its characteristic smell was undiminished. 
Mixed with hydrogene or oxygene singly, the gas was not 
inflamed by the electric spark, but mixed with both, in proper 
proportions, viz. two parts in volume of the former and one 
of the latter to two parts of the gas, a violent explosion was 
produced, and the muriatic and carbonic acid gasses were 
formed. 
The gas transferred to water was quickly decomposed, the 
carbonic and muriatic acids were formed, as in the last expe- 
riment, and the effect was the same even when light was 
excluded. 
From the mode of the formation of the gas and the con- 
densation that takes place at the time, from the results of the 
decomposition of its ammoniacal salt, and from the analysis 
of the gas by metals and metallic oxides, it appears to be a 
compound of carbonic oxide and chlorine condensed into half 
the space which they occupied separately. 
And from its combining with ammonia, and forming with 
this alkali a neutral salt, and from its reddening litmus, it 
seems to be an acid. It is similar to adds in other respects ; 
in decomposing the dry sub-carbonate of ammonia, one part 
U 2 
