72 Scientific Intelligence. 
i 
luster was greasy, and the touch unctuous. In the air it dried 
rapidly, and at the end of some weeks it was transformed into a 
soft, white, sectile mass, having some consistericy, and more or 
less plastic. If exposed still longer it became nearly solid, resem- 
bling steatite; in this condition it had about the hardness of tale 
and its specific gravity was found to be 2-08—2-10. An analysis 
by Prof. Bischoff, on material dried at 100° C., afforded the fol- 
Seine results : 
SiO, AIO; CaO MgO  ¥,0O H,0 
48°39 20°49 3°57 3°14 2°79 21°62—=100°00 
This corresponds closely with the composition of chabazite, and 
Renevier refers it to this species, but calls it a “ mineral in an em- 
oe Se condition.” — Bull. Soc. Vaud. Se. Nat., xvi, 81. §. 8. D. 
ihsteeawar can 98! Beitrdge zur Kenntniss der Kau- 
Perlite der auf Grund seiner a herausgegeben, von 
Dr. Oscar ScHNEIDER. 160 pp. 8vo, cine skeet 1878.—The exten- 
1875, have been neue d over in part by himself and in part by a 
number of specialists, and the results are contained in the present 
olume. The minerals have been ines by Professor Frenzel ; 
among other points he describes a new species under the name of 
urusite, It was found with iron vitriol and other iron salts at 
Tscheleken. Its characters are as follows: it occurs in rounded 
lum 
easily crushed to a powder consisting of inate ort orthorhombic 
crystals. The specific gravity is 2°22; the colors is a yellow 
and the streak ochre ellow. An analysis gave: SO, 42°08, FeO, 
HL, ri a = 99°66. This ee ee "to the 
a, 4 + 5H 
4. Mémoire sur le Fer “Notip du Greenland et sur la Dolerite 
qui le renfarne pe Lawrence Suiru. (Annales de Chimie et 
J. 
de Physique eat 1879). —The native iron of Ofivak, Green- 
land, was discovered by Professor Nordenskiéld in 1870, and by 
him described as of meteoric —" later writers, however, have 
