American Water-Burner. 389 
than any of the others. The mind delights more in tracing out 
those grander features and relations in the mineral kingdom, ex- 
hibited in the structure and arrangement of mountainous and ai- 
pine country, than in decyphering the minute, although very in- 
teresting, connexions observable among simple minerals. We 
have accurate geognostical descriptions of many extensive tracts 
of country in Great Britain, but the history of the simple mine- 
rals contained in the rocks of these districts is but imperfectly 
known. It is therefore with pleasure that we cominunicate to 
our readers the following notice, by the celebrated Professor Pic- 
tet of Geneva. 
Description of a Mineral nearly resembiing Haiiyne, found in 
primitive Limestone, in the Island of Tiree, one of the He- 
brides. By Professor L. A. NECKER : 
Colour—Pure sky-blue, sometimes slightly greenish. 
Lustre—Shining and vitreous. 
Transparency—Translucent. 
Fracture—Conchoidal. 
Hardness—Seratches glass. 
Form—Massive and in roundish grains. 
Chemical Characters.—Before the blow-pipe it becomes 
white and opake, but does not melt. It dissolves in acids ; but 
we could not, from the smallness of the quantity, determine if it 
formed with them a jelly. 
Geognostic Situwation.—It occurs in very minute grains in 
the contemporaneous masses of felspar, mica, sahlite, and au- 
gite, which are imbedded in a primitive limestone contained in 
gneiss. 
Geographic Situation.—It occurs in the limestone or marble 
rocks at the farm of Balephetrich in Tiree. 
Observations.—If this mineral, as we suppose to be the case, 
should prove to be the true Hatiyne, it will be the first instance 
of its occurring in a primitive district, the varieties hitherto de- 
scribed having been met with in lavas, basaltes, and rocks thrown 
out by volcanoes. ——- . 
AMERICAN WATER-BURNER. 
An apparatus called the American Water Burner has been 
invented by Mr. Morey, of New Hampshire, who, after making 
many experiments, and employing various combustible sub- 
stances, as tar, rosin, oil, &c. to mix with the steam, has 
brought his apparatus to perfection. The construction is very 
simple: Tar is intimately mixed with steam or vapour of water, 
and made to issue, with a force proportional to the pressure of 
the steam, from a small orifice, like that in the jet of a blow- 
Vol. 52. No. 247. Nov. 1818. Bb pipe, 
