2 64 > Mr. Faraday on fluid chlorine. 
exactly like it in form and size, and a portion of water intro- 
duced into it, as near as the eye could judge, of the same bulk 
as the fluid chlorine: this water was found to weigh 1.2 
grains ; a result, which, if it may be trusted, would give the 
specific gravity of fluid chlorine as 1.33; and from its ap- 
pearance in, and on water, this cannot be far wrong 
Mote on the condensation of Muriatic Acid Gas into the liquid 
form. By Sir H. Davy, Bart. Pres. R. S. 
In desiring Mr. Faraday to expose the hydrate of chlo- 
rine to heat in a closed glass tube, it occurred to me, that 
one of three things would happen ; that it would become 
fluid as a hydrate ; or that a decomposition of water would 
occur, and euchlorine and muriatic acid be formed ; or that 
the chlorine would separate in a condensed state. This last 
result having been obtained, it evidently led to other re- 
searches of the same kind. I shall hope, on a future occa- 
sion, to detail some general views on the subject of these 
researches. I shall now merely mention, that by sealing 
muriate of ammonia and sulphuric acid in a strong glass tube, 
and causing them to act upon each other, I have procured 
liquid muriatic acid : and by substituting carbonate for mu- 
riate of ammonia, I have no doubt that carbonic acid may be 
obtained, though in the only trial I have made the tube burst. 
I have requested Mr. Faraday to pursue these experiments, 
and to extend them to all the gases which are of consider- 
able density, or to any extent soluble in water ; and I 
hope soon to be able to lay an account cf his results, with 
