G. F. K\mz- — New AmeHcan Meteorites. 315 



the University of Minnesota; the 125-pound mass, to Harvard 

 University; the 101-5 to Yale University-; the 218£ and the 

 54-96-pound masses, to the University of Kansas ; the others 

 are in the collection of the writer. 



The specific gravity of the pieces is very variable, and was 

 found to be as follows : — of the 6-pound mass, 5 17 ; 40-pound 

 mass, 6'41 ; 71 '5-pound mass, 5'22; 75-pound mass, 7'27 ; 

 345-pound mass, about the same density as the last ; 466-pound 

 mass, about the same density as the 71 5 pound mass. The 

 following analyses of the Kiowa meteorites were made by 

 Mr. L. G-. Eakins in the laboratory of the United States Geo- 

 logical Survey : 



Iron. Olivine. Dark Outer Zone of Olivine. 



SiO„ 40-70 Si0 2 ... 34-14 



FeO 23-20 



NiO tr 



CoO -03 



MnO -00 



MgO 40-19 



S 5-42 



Fe 



88-49 



Ni 



10-35 



Co .... 



•57 



Cu .... 



•03 



P 



14 



S 



-08 



c 



tr 



Si 



tr 



^iw 2 



Al.O,..- 



tr 



Fe.O,— . 



•18 



FeO 



. . 10.79 



NiO 



•02 



MnO 



•14 



MgO 



48-02 



99-S5 103-07 



99-66 Less O for S 2-71 



100-36 



The specific gravity of the iron freed from olivine was found 

 to be 7-93 at 234° Celsius; of the olivine, 3'376 at 23-2°. 

 The iron is brilliant white, enclosing the troilite, and surround- 

 ing the olivine crystals. Occasionally small etched surfaces 

 show delicate figures like that of the Linnville Mountain me- 

 teorite. Troilite exists plentifully, in rounded grains from 

 one to five millimeters in diameter, and in thin folia mixed 

 with and surrounding the olivine crystals, as well as running 

 into and filling small spaces in the body of the iron, either as 

 flat plates or rounded masses. Several flat circular plates 

 [crystals ?] of graphite, two millimeters in diameter, were 

 observed. 



The olivine crystals are very brilliant, and break out entire, 

 the faces on many of them being distinct enough to allow of 

 measurement of the angles. The spaces from which they 

 break are highly polished, showing every crystal face with a 

 mirror-like luster; and in the center there is a coating of a 

 shining mineral that is jet-black in color, and crushes into a 

 jet-black powder. Many of the olivine crystals are in two 

 distinct zones, — the inner half a bright transparent yellow, the 

 outer a dark-brown iron-olivine. In reality this dark zone is 

 an intimate mixture of troilite and olivine, as the analysis of 



