108 



BULLETIN 94, UNITED STATES NATIONAL MUSEUM. 



9.88 



Per cent. 

 Iron (Fe) 7.93 



Manganese (Mn) .57 



Nickel (Ni) 1.38 



Cobalt (Co) Trace. 



Silica (SiO,) 42.74' 



Alumina (AUOs) Trace. 



Ferrous oxide (FeO) 20.86 



Manganous oxide (MnO) 1.12 



Magnesia (MgO) 15.95 



Lime (CaO) 2.78 



Soda (Na^O) 1.20 



Potash (K=0) .21 



Lithia (Li,0) Trace. 



Sulphur (S) • 2.61 



Phosphorus (P) .41 



Carbon (C) (?) .19 



Chromite 1. 56 



89.63 



99.51 



Subtracting the sulphur and phosphorus as belonging to troilite 

 and schreibersite, 99.51—1.39=98.12: Soluble in hydrochloric acid, 

 52.30; insoluble- in hydrochloric acid, 47.70. 



According to Tschermak's description, the stone is chondritic, of a 

 gray color, flecked with rust spots, and traversed by fine black veins. 

 The mineral composition is olivine, enstatite, diallage, a plagioclase 

 feldspar, chromite, pyrrhotite, metallic iron, and an amorphous black 

 undetermined substance. 



References.— A.. Koch, Min. pet. Mitth., vol. 5, 1883, p. 234. G. 

 Tschermak, Sitz. Akad. Wiss. Wien., vol. 85, 1882, p. 195. 



MODOC, SCOTT COUNTY, KANSAS. Nos. 360, 388. 



Stone, Cwa. Two complete individuals, weighing, respectively, 

 1,170 grams and 2,2G8 grams, representing the second and fourth 

 largest stones out of a shower of 15 stones having an aggregate 

 weight of 16 kilograms (about 35 pounds), which fell on the night 

 of September 2, 1905, at about 10 p. m. (pi. 25, fig. 2). The fall was 

 observed and described by Mr. J. K. Freed, to whom the United 

 States National Museum is indebted for the two samples here re- 

 corded, and from whose account the following has been taken : 



The first explosion of thi^ meteorite is said to have occurred when it was 

 about 6 miles due west of Scott City, and to have occasioned a terrific roar 

 plainly heard for a distance of 2.i miles, awakening those who had already 

 gone to sleep and frightening people for miles around. Its appearance at the 

 time of the explosion was variously described as like the " headlight of a loco- 

 motive," and as a " white light as big as a haystack afire." Eighteen miles 



