J. L. Smith—Daubrée’s Experimental Geology. 387 
The composition of meteorites is reviewed, and the well- 
established fact that but few minerals enter into the constitu- 
tion of these bodies, however different they may be in physical 
characters. 
The metallic iron, forming either the entire mass or dissemin- 
ated in small particles through the stones, is invariably a nickel- 
iferous iron, containing a little cobalt and a trace of copper. The 
€ most interesting part of Professor Daubrée’s labors 
relates to the fusion of meteorites and their artificial imita- 
ton. In the first class of experiments the results show that 
he fusion of the eukritic meteorites present some remark- 
able features; “they yield a product wholly different from the 
other magnesian meteorites, namely : a vitreous mass sometimes 
striped by a commencement of devitrification, but without 
crystals of olivine or enstatite.” ‘(In the same experiments, a 
Ow red heat. The oxide of iron was reduced to metallic iron, 
and the phosphates to phosphides, the products having a close 
* The enstatite, also called bronzite, in its chemical character is a magnesian 
Pyroxene, 
