Howell — Deselection of t lie Williamstown Meteorite. 49 



Art. Til.— Description of the Williamstown Meteorite ; by 

 Edwin E. Howell. 



This siderite was secured from A. E. Ashcraft, who found 

 it April 25, 1892, on his farm in Grant Co., Kentucky, three 

 miles north of Williamstown. 

 It is a thin flat rectangular mass, . r . 



measuring 12x16 inches; it is : 



2|- inches thick in the center -1 ^\?\ 



thinning to a blunt edge at 



either end, looking not unlike _», JL*~sr^ \ 



a large double-edged ax. The ; -' % 



total weight of the mass was 68 

 lbs., or about 31 kilos, and had 

 a specific gravity of 8*1. It 

 was entire when it reached me 

 with the exception of a few 

 ounces broken from one of the 

 thin edges. We have cut the 

 iron into a number of sections 

 which etch very readily, show- 

 ing it to be a typical octahedrite, 

 of medium coarseness, as seen in 

 the accompanying full-size cut 

 of one of the smaller sections. 

 It will be seen from this cut 

 also that the kamacite bands 

 are massed together to a con- 

 siderable extent, leaving an 

 unusually small number of pless- 

 ite blocks ; these when deeply 

 etched are seen to be crossed 

 by minute parallel, broken 

 threads of tsenite. In addition 

 to the three regular distinct 

 systems of kamacite bands there 

 is another, less regular, system 

 of broader bands averaging in 

 width about 3 mm , which cross 

 the other bands, uninterruptedly 

 in some cases, for a distance of 

 4 cm . The apparent thickness of 

 these bands is greatly exagger- 

 ated by the angle at which they 

 are cut. Comparison of sections 

 shows that while the other systems are cut at approximately 



Am. Jour. Sci.— Fourth Series, Vol. XXV, No. 145.— January, 1908. 

 4 



v:/ 



