Dr. Walter Flight — History of Meteorites. 599 



only (see p. 551), that an investigation of this question is desirable. 

 The author further states that in a second portion of the same 

 sample he found the silicates to amount to 61-10 per cent., in 

 another fragment to 48-99 per cent. ; while in yet another portion 

 the nickel -iron, judging from the per-centage of nickel it contained, 

 constituted 39-20 per cent, of the stone. 



Found April, 1868.— Losttown (2| miles S.W. of), Cherokee Co., 



Georgia. 1 



According to Shepard's first notice, this block of iron has the form 

 of a human foot and weighs 61bs. lOoz. " Widmannstattian figures 

 are visible directly in one portion of the surface ;" those presented by 

 treatment with acid are stated to be very beautiful and to most 

 nearly resemble the figures of the Seneca Lake iron. The nickel, 

 which in the first notice is stated to be abundantly present, although 

 the development of the figures would not lead one to expect the per- 

 centage to be large, proved on analysis to be considerably below the 

 average, as the following composition shows : 



Iron = 9o-759; Nickel = 3-660 ; Insoluble portion = 0-580. Total= 99-999. 

 The insoluble part is stated to consist of schreibersite and rhabdite ; 

 traces of cobalt, chromium magnesium, and tin (?) were detected. 

 The specific gravity of the iron is 7 - 52. 



1868, July 11th. — Ornans, Doubs, France. 2 



This meteorite is described as differing in appearance from any of 

 the stones which have fallen in Europe during recent times. It has 

 a dull grey colour, and is so friable that it can be crumbled between 

 the fingers. It is very porous ; a fragment immersed in water ab- 

 sorbed about -j-'o-th of its weight of water in two hours. Particles 

 of iron can only be detected here and there with a lens, and the 

 stone is feebly magnetic. The specific gravity of the rock is 3-599, 

 and it consists of : 



Nickel-iron 1-85 



Magnetic pyrites 6-81 



Ckromite 0-40 



Olivine 75-10 



Insoluble silicate 15-26 



99-42 

 The portions of silicate separated by the treatment with acid were : 

 Si0 2 A1 2 3 FeO MO MgO CaO K 2 and Na^O 



A. Soluble 33-37 3-93 3076 3'83 26-37 1*74 — =100-00 



B. Insoluble ...40-43 8-98 10-55 — 3015 6-29 3-60 = 100-00 



Pisani, it will be seen, is of opinion that a portion of the 

 nickel is present in the form of oxide in the silicate which 

 gelatinises with acid. He determined the amount of iron present 

 as metal by measuring the volume of hydrogen which it evolved 



1 C. U. Skepard. Amer. Jour. Se., 1869, xlvii. 234. — See also Amer. Jour. Sc, 

 1868, xlvi. 257. 



2 F. Pisani. Compt.rend., 1868, lxvii. 663.— G. Tschermak. Sitzber. AJc. Wiss. 

 Wien, 1870, lxii. 855. 



