106 BULLETIN 94, UNITED STATES NATIONAL MUSEUM. 



Eecalculations of these analyses give the followmg figures to sliow 

 tlie composition of tlie entire meteorite : 



Per cent. 



Silica (Si02) 20.64 



Alumina (Al.O.-,) 3.55 



Fei-rous oxide (FeO) 8. 8S 



Magnesia (MgO) 8.08 



Lime (CaO) ^ 2.71 



Iron (Fe) 49.18 



Nickel (Ni) 5.73 



Cobalt (Co) .16 



Phosphorns (P) -08 



Iron sulplilde (FeS) -99 



100. 00 



Specific gravity of mass, 4.484. 



This stone is doubtless identical with that of Newton County, 

 Arkansas, described by J. Lawrence Smith in 1865. The 34-gram 

 piece the gift of George F. Kunz. 



Reference.— Q. F. Kunz, Anier. Journ. Sci., vol. 34, 1887, p. 467. 

 It should be noted that on page 469 of this paper Mr. Kunz made a 

 very ob\ ious error in tabulating the soluble silicate portion as insolu- 

 hle., and vice versa. 



MISSHOF, COURLAND, RUSSIA. Nos. 286, 247. 



Stone, Cc. Two pieces with crust, weighing, respectiA-ely, 45 

 grams and 109 grains. Weight of original mass, 5,800 grams. Fell 

 on the afternoon of April 10, 1890, at about 4 o'clock. The stone is de- 

 scribed by Bruno Doss as an aggregate of chondrules and isolated 

 fragments of olivine and enstatite imbedded in an ash-gray ground of 

 a tufaceous nature. Pyrrhotite and native iron occur in small quan- 

 tities. There are also present other silicate minerals, as a triclinic 

 feldspar and a monoclinic pyroxene. The rhombic pyroxene is poly- 

 synthetically twinned. Chromite occurs in the usual small granular 

 form, xi chemical analysis.'by E. Johanson yielded : 



Per cent. 



Silica (SiO.) 34.96 



Alnminu (AkOa) -29 



Chromic oxide (Cr203) 1.368 



Tin oxide (SuO^) -156 



Iron (Fe) 14.806 



Nickel (Ni) 1-35 



Copper (Cu) -19 



Manganese (Mn) -276 



Ferrous oxide (FeO) 11.85 



Manganous oxide (MnO) 4.372 



Magnesia (MgO) 19. 33 



Potash (K2O) • 1-13 



Soda (Na..O) 3.94 



Troilite (FeS) 5.75 



Pyrrhotite (Fe,Ss) -54 



Chlorine (CI) -^^ 



100. 315 



