On a new Compound of Chlorine and Carbon. 33 
witnessed in some of the caverns of Derbyshire, where the ends 
of the stalactites depending from the roof are hooked, or curved 
upwards). Now on this supposition, if a stone or stones were 
thrown in, either wholly or partially to blockade that orifice, the 
steam mae be thereby confined, and sooner be raised to a 
maximum, because the water is then prevented from its slow 
and gradual ascent into the basin, and thus diminishing the 
amount of the elasticity of the steam; whereas, in common cir- 
cumstances the steam sallies forth at slants through the water, 
before it obtains the force necessary to the propulsion of the jet 
into the atmosphere. 
Vil. On a new Compound of Chlorine and Carbon. By Ri- 
cHarp Puituips, F.R.S. E. F.L.S. M.G.S., @c., and 
MIcHAEL Farapay, Chemical Assistant in the Royal Insti- 
tution. Communicated by Sir Humpnry Davy, Bart. 
Pens. 
M Jutix, of Abo, in Finland, is proprietor of a manufactory, 
in which nitric acid is prepared by distilling calcined sulphate of 
iron with crude nitre in iron retorts, and collecting the products 
in receivers connected by glass tubes, in the manner of Woulfe’s 
apparatus. In this process he observed, that when a peculiar 
kind of calcined vitriol, obtained from the waters of the mine 
of Fahlun, and containing a small portion of pyrites, known in 
Sweden by the name of ealcinil aquafortis vitriol No, 3, was 
used, the first tube was lined with sulphur, and the second with 
fine white feathery crystals. These were in very small quantity, 
amounting only to a few grains from each ‘distillation ; but 
M. Julin, by degrees, collected a portion of it, and, having 
brought it to this country, inserted a short account of its pro- 
perties in The Annals of Philosophy, vol. i. p. 216, to which a 
few observations were added by ourselves. 
The following are the properties of this substance, as deseribed 
by M. Julin. — It is white ; consists of small soft adhesive yeni 
sinks slowly in water; is innolibldsi in it whether hot or cold; 
tasteless; has a peculiar smell, somewhat resembling rie 
ceti; is not acted on by sulphuric, muriatic, or wale: acid, ex- 
cept that the latter by boiling on it gives traces of suiphurie acid; 
boiled with caustic potash, has a small portion of sulphur dis- 
solved from it; dissolves in hot oil of turpentine, but most of it 
erystallizes in needles from the solution on cooling 5 dissolves in 
* From the Transactions of the Royal Society for 1821, Part I. 
Vol. 59. No. 285. Jan. 1822, ib ‘wiling 
