T. Carnelley— Existence of Ice at high Temperatures. 385 
ART. XL TX: —Preliminary Note on the EF ristence of Ice and other 
Bodies in the Solid ee at Temperatures far above their ordin- 
ary Meiting Points; by THoMAS CARNELLEY, D.Sc., Profes- 
sor of Chemistry in Firth College, Sheftield.* 
In the present communication I have the honor to lay before 
the Royal Society a detailed dese sription of experiments, prov- 
ing that under certain ee it is possible for ice and other 
bodies to exist in the solid state at temperatures far above their 
ordinary melting points. On a future occasion I hope to sub- 
mit to the Socie ty a full account of the investigation of which 
soe *xperiments form a part, together with the conclusions to 
be drawn therefrom. The bodies whose behavior I propose to 
discuss at present are ice and mercuric chloric 
lee. 
the case of ice the great difficulty to be overcome is to 
maintain the pressure in the containing vessel below 4°6™", 1. e., 
pau 
the tension of aqueous vapor at the freezing point, for it will be 
easily understood that if the ice be but slightly heated the 
quantity of vapor given off would soon be suf fic ient to raise the 
pressure above that point. After sever ral fruitless attempts the 
* From the Proceedings of the Royal Society, January 6, 1881. 
