12 MEMOIRS NATIONAL ACADEMY OF SCIENCES. tvoL.xiv. 



The high percentage of nickel shown by this analysis is comparable with that of the schrei- 

 bersite from the Magura iron. Even greater amounts have been reported as yielded by the 

 irons of Seelasgen, Germany (36.17 per cent), and Cranbourne, AustraUa (38.24 per cent). 



(5) Stony-iron (Pallasite). — Mount Vernon, Ky. A coarse paUasito, consisting of large 

 blebs of olivine in a mesh of metal. Described by Tassin."^ No complete (bulk) analyses 

 made owing to the coarse nature of the stone. Tlio nickel aUoy yielded Tassin as follows: 



Per cent. 



Iron 82.520 



Nickel 14.044 



Cobalt 949 



Copper 104 



Sulphur 288 



SiUca 808 



Aluminum 410 



Carbon 465 



Phosphorus 390 



Chlorine Trace. 



99. 978 



He also gave analyses of the included tsenite, schreibersite, troihte, chromite, and olivine 

 separately, but found no constituents of miusual occm'rence. 



A 50-gram sample, badly oxidized, submitted to Dr. Whitfield for tests for minor elements, 

 yielded : 



Per cent. 



Chromium 0. 300 



Copper 016 



Nickel 2.960 



Cobalt ■ 090 



Manganese 151 



Vanadium Trace. 



No trace of molybdenum, tmigstcn, antimony, tin, lead, zinc, gold, silver, or platinum 

 was found. 



(6) Stony-iron {Pallasite). — Krasnojarsk, Siberia. A well-known historic meteorite, stated 

 by previous workers to contain arsenic and tin. The material being too coarse for bulk or mass 

 analysis, the metal and olivine were examined independently. The metallic portion yielded : 



Per cent. 



Fe 89.90 



Ni 9.52 



Co 60 



P 085 



100. 105 

 The sihcato portion (ohvine) yielded: 



Per cent. 



SiO. 37. 22 



FeO 15.21 



AlA 46 



MgO 47.07 



99.96 



with no traces of arsenic, chromium, manganese, sulphur, or tin, in either portion. 



(7) Meteoric stone, CMadnite. — BishopviUe, S. C. This unique stone fell on March 25, 

 1843, and was first described by Shepard in 1846.'' It has since been the subject of numer- 

 ous writings (see Wiilfing, pp. 29-31), and in several instances subjected to partial anal- 

 yses. The widely variant results obtained are due as much to imperfect sampling as to 

 incoiTect determinations. The Museum collection possessing several grams of fragmental 

 material, it was deemed advisable to sacrifice them to the searching methods of modern 

 analytical chemistry. The stone was described by Shepard as consisting in large part of a 



, — — ■ — # 



a Proc. U. S. Nat. Mus., vol. 28, 1905, p. 213. b Amer. Journ. Sci., vol. 2, 1846, p, 379. 



