The Fisher Meteorite. — Winchell. 317 
1, Particles belonging to group 2, i. e. glass. 
2. Particles of a translucent mineral which showed angu- 
lar fracture, and but little or no cleavage, presumed to be the 
doubly refracting mineral which is like maskelynite, and pos- 
sibly represented by groups 5 and 6. 
With the first the test revealed lime and a little soda. With 
the second were developed, along with fluosilicates of lime, a 
liberal sprinkling of hexagonal rods of fluosilicate of soda. 
There is not enough of this mineral present to warrant an 
attempt at quantitative analysis. It remains therefore unde- 
cided whether the meteorite contains maskelynite. The evi- 
dences in favor of its presence are: 
1. A feebly polarizing mineral, low in double refraction, 
occurring in the midst of the chondri and elsewhere. 
2. This mineral shows little or no cleavage. 
3. It contains lime and soda. 
4. The glass from which it seems to have crystallized also 
contains soda, and no soda has been detected in the other min- 
erals.* 
Chemical Analysis of the Fisher Meteorite. 
By C. P. Berkey, University of Minnesota. 
An analysis was made of some small fragments of this me- 
teorite. Preliminary qualitative tests showed the following 
elements: Silicon, aluminium, iron, nickel, calcium, magnesi- 
um, and sulphur. Silicon occurs as the oxide, forming the 
mineral tridymite and also occurs in the silicates raaskelynite, 
olivine, and enstatite. Aluminium, calcium and magnesium 
and a part of the iron occur in the silicates. Nickel is pres- 
ent native or possibly forming an alloy with the iron. Iron is 
present in three forms, metallic iron, ferrous oxides in the sil- 
icates, and ferric oxide chiefly as an oxidation product from 
the native metal. 
Sulphur is present in small quantity in the mineral troilite. 
No alkali metals were found. 
The bulk analysis gave : 
*Unavoiclable obstacles have delayed the conclusion of this examina- 
tion. The reader is referred to this journal for former accounts of this 
meteorite, viz, vol. xvii, pp. 173. 234, and to Comptes Rendus des St- 
ances de V Acad^mie des Sciences, Paris, 16 Mar. 1896. 
