3^4 Scientific Intelligence. 
Sulphate of Potash, - - - 
27.634-? 
Hydrous Sulphate of Lime, 
28.4580 
Anhydrous Sulphate of Lime, 
22.2184 
Anhydrous Sulphate of Magnesia, 
20.0347 
Anhydrous Sulphate of Iron, 
0.2927 
Muriate of Soda, - - _ 
0.1910 
Muriate of Magnesia, 
0.0100 
Oxide of Iron, - » - 
0.1920 
99.0315 
From the above analyses, it appears that the constituent parts 
are united together exactly in the proportion of their equiva- 
lents, thus proving that this mineral is not an accidental inter- 
mixture of salts. The polyhalite is farther remarkable, on ac- 
count of the sulphate of potash it contains, and in this respect 
it is eminently distinguished from all analogous mineral species, 
for, with- exception of natural alum, this salt has not been found 
as a regular constituent part of any other natural salt. And, 
further, as the polyhalite occurs in a bed of rock-salt, this con- 
stituent part, the sulphate of potash, is rendered the more re- 
markable. 
40. Picropharmacolite contains, according to Stromeyer, 
lime, 24.646 ; magnesia, 3.218 ; oxide of cobalt, 0.998 ; ar- 
senic acid, 46.971 ; water, 23.977 = 99.810. 
41. Recent Irem-Pyrites. — Professor Meinecke observed on 
the Tolauer Heath, near Halle, tables of an inch in breadth of 
iron-pyrites, intermixed with reeds, and which he observed con- 
tinued to increase in size, thus proving their new formation. 
42. Fossil Skeleton of the Mammoth and Elephant . — ^An 
immense skeleton of a mammoth, and another of an elephant, 
have been dug up, in the district of Honter in Hungary. 
43. Satin-Spar has been observed by Mr Morse at Glen’s 
Falls ; it is in thin, delicate, but extensive veins, principally in 
the fallen rocks below the bridge ; generally it is of a brilliant 
white, but sometimes it is black, although still retaining its fi- 
brous structure. Crystals of Bitterspath^ well defined and glis- 
tening in the black limestone, occur at Glen’s Falls. — Silliman's 
American Journal. 
44. Native Yellow Oxide qf Tungsten-^OccMV^ incrusting 
