Ill, 111 



=■ 



70° 31' 



Oil, 131 



= 



31 25 



131, 113 



= 



50 25 



Dr. Walter Flight — Eistory of Meteorites. 603 



bodies, disposed parallel to the cleavage-planes ; their nature could not 

 be determined. The plate accompanying Tschermak's paper furnishes 

 drawings of all these substances. 



In addition to the octahedral faces (111) von Lang observed on 

 the chromite crystals faces of the rhombic dodecahedron (110) and 

 the leucitoid (311), and made the following measurements : 



Calculated. 



70° 32' 



31 29 



58 29 



1868, November 27th.— Danville, Alabama. [Lat. 34° 30 / N. ; 

 Long. 87° 0' W.] l 



During the (American) war, writes Dr. Laurence Smith, artillery 

 had often been beard in the valley of the Tennessee, and various specu- 

 lations were indulged in as to the meaning of a loud report, like 

 that of a cannon, which occurred at about 5 p.m. on the day above 

 mentioned, and appeared to come from a direction northward of 

 Danville. On the following day a man brought to that town a piece 

 of rock which, he said, fell near him and some labourers who were 

 picking cotton at a place 3 miles W. of Danville. It entered the 

 soil to a depth of 1^ to 2 feet, and when exhumed was found to 

 weigh about 4| lbs. Several stones fell in the neighbourhood ; one 

 near some negroes at work in a cotton-field, two others whizzed 

 right and left past two men who were ploughing a field about If- 

 miles N.W. of Danville. 



The meteorite which reached Dr. Smith's hands, the first of those 

 mentioned, has the usual black crust, which is rough and dull, and 

 appears in some parts to have been whipped round, as it were, and 

 rolled over the border on to the unfused surface as the stone tra- 

 versed the atmosphere. 



A fresh surface has a dark grey colour, and is less chondritic than 

 is the case with many meteorites, and there are veins or patches of 

 a slate-coloured mineral running across it. Iron sulphide and nickel- 

 iron are diffused through the rock, the latter more especially in the 

 slate-coloured areas ; and there are occasional white patches of what 

 is probably enstatite. 



The meteorite has a specific gravity of 3*398, and contains 3*092 

 per cent, of nickel-iron consisting of : 



Iron = 89-513; Nickel = 9-050 ; Cobalt = 0*521 ; Phosphorus = 0*019 ; Sulphur = 

 0-105; Copper, trace. Total = 99-208. 



and the iron sulphide contains : 



Iron = 61-ll; Sulphur = 39-56. Total = 100-67. 

 If the excess over 100 be deducted from the iron, the chief con- 

 stituent, these numbers correspond very closely with the percent- 

 ages of magnetic pyrites (pyrrhotite), not with iron protosulphide, 

 as stated in this paper ; troilite, the presence or absence of which 



1 J. L. Smith. Amer. Jour. Sc, 1870, xlix. 90. 



