22 



MEMOIRS NATIONAL ACADEMY OF SCIENCES. 



I Vol. XIV. 



Per cent. 

 Silica (SiOj) 31. 06 



Alumina (Al^) - 4.30 



Phosphoric acid (P2O5) -25 



Chromic oxide {Cifi^) 41 



Ferric oxide (Fe^) 1^- 15 



Ferrous oxide (FeO) 13.07 



Manganous oxide (MnO) .26 



Nickel oxide (NiO) 1. 45 



Cobalt oxide (CoO) 15 



Lime(CaO) 2.13 



Magnesia (MgO) 21. 21 



SodaCNa^O) 3.96 



Potash (KjO) 07 



Vanadium oxide (V2O3) Trace. 



Water (H2O) 3.07 



Troiiite{}f);^V;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;:;:::::::;::::::::::::::;:;::;;;::;; :f2 



100. 05 



No traces of other constituents than those mentioned. 



(19) Meteoric stone, Eukrite. — Stannem, Moravia. This stone, which fell on the 22d of 

 May, 1808, has become, on account of its wide distribution in public and private, collections 

 throughout the world, one of the best known of meteorites. It naturally follows that it has been 

 repeatedly the subject of investigation and publication. Wiilfing's catalogue gives 74 independ- 

 ent publications between the date of fall and 1894, two of which included chemical analyses. 

 Of these only that of Rammelsberg, given in Column II below, needs consideration. The 

 latest analysis, by Whitfield, is given in column I. This was made with especial reference 

 to the possible presence of barium, strontium, or zirconium, it being a feldspathic stone. 



(20) The three meteorites mentioned below were subject to partial analyses only. 



Ballinoo, Australia. — Iron. Finest octahedrite. This iron, described by Sjostrom," so 

 closely resembles in its physical and chemical properties that of Perryville, Mo., that it was 

 thought advisable to test it for the rarer or minor constituents not reported in its published 

 analysis. A 30-gram fragment submitted to Dr. Whitfield showed neither platinum nor 

 iridium, but on the other hand did show unmistakable traces of palladium and ruthenium. 



Glorieta Mountain, N. Mex. — Iron. Medium octahedrite. This u-on, described by G. F. 

 Kunz, with analyses by L. G. Eakins '' was stated to caiTy 0.03 per cent zinc. Dr. Whitfield, 

 however, working on Another portion, failed to find a trace of the metal. 



o Sitz. k. Preus. Al^ad. Wlss. Berlin, 1908, p. 21. 



b Ann. N. Y. Acad. Sci., vol. 3, 1885, p. 33). 



