292 Miscellaneous Intelligence. 
The mixture now differs from the original only in containing in place 
of the chlorid of calcium a sulphate which acts in precisely the same 
ay. The regeneration of the aid materials is effected in an hour or 
two and the author has already repeated it fifteen successive times. 
It becomes at last necessary to wash out the salt of ammonia, when 
the material regains all its pristine force 
this process all impurities, even sulphuret of carbon, are 
removed, with a large portion of carbonic acids while the increase of 
the illuminating power is estimated at eight per cent. The cost of 
materials is slight, while the impurities are converted into merchant- 
able articles, and the wear and cost of apparatus is reduced to a 
inimum. 
These results have been verified by experiments at Paris and suc- 
ceestally carried out on a large scale at the gas works at VT 
. SH. 
15. On the Asphaltic Coal of New ae a by C. T. ape oN, 
(Proc. Bost. Soc. Nat. Hist., April, 1850, 279, )—On the 16th of 
last March, Henry W. Fuller, Esq. o i sent me a box of speci- 
mens of a new kind of fuel recently discovered in New Brunswick. 
It was regarded as cannel coal of a peculiar kind. 
his substance proved to be a very ay birdie of asphaltum. 
It is jet black, glossy, and free from smut. It s witha brs con- 
choidal hectuen like obsidian, and presents a brilliant surfac 
It is a little softer than sonk salt, which scratches its othe Its spe- 
cific gravity is 1-107. 
It softens and a when exposed to heat in close vessels. When 
and a little susie: Heated in a glass flask, it gives off an abundance 
of bituminous liquid analogou etroleum, and leaves a eryilight 
and bulky coke of a brilliant black color and very: porous. n eX- 
posed to heat in a covered rae —— an abundance of ca 
Feddings a =a yellowish miatter, which is obtained by evaporation of 
the solution. Oil of tumpentine dissolves a considerable quantity of 
the asphaltum, forming a varnish such as is used by engravers. 
ps aaiae the coke remained and was weighed. The results of tw 
trials gave,— 
58:5 of volatile matter. 58°8 of volatile matter. 
41:5 of coke. 41°2 of coke. 
100-0 100-0 
The coke obtained was burnt on . platinum tray, placed in a red-hot 
mufile, and left 0-47 percent. of ashes, of a deep reddish brown colo, 
consisting of  Panonye of iron with a little eat Cis manganese. and 
hs 
ES 
