METEORITES OF NORTH AMERICA. 495 



crossed by minute parallel, broken threads of tasnite. 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 exag- 

 gerated by the angle at which they are cut. Comparison of sections shows that while the other systems are cut at 

 approximately right angles these broader bands are cut at an angle of 60° or 70°, which would seem to show that in 

 reality they are no thicker than the others. Unfortunately our cut shows these bands but faintly. 



Troilite seems to be pretty generally distributed through the mass but mostly in very small grains, although the 

 cuttings revealed one nodule 0.75 inches in diameter and two others of about 0.5 inch each. The total amount of this 

 mineral, however, is small, as might have been inferred from the specific gravity and the general smoothness of the 

 surface. 



I am indebted to Mr. Wirt Tassin, of the United States National Museum, for a chemical analysis of this iron and 

 some notes on its structure, as follows: 



The structure of the etched surface is octahedral. The three alloys, kamacite, tsenite, and plessite, are present. 

 The kamacite bands are of average length and the lamella; vary in width from 0.5 to 1.5 mm. The tenite bands are of 

 capillary size and are often irregular in trend and distribution. Occasionally the fairly uniform structure is interrupted 

 by broad irregular bands which have a length about twice that of their width. Here and there are nodules of troilite, 

 some of which inclose carboniferous matter. These troilite nodules are usually bounded by a thin line of schreibersite. 

 The material available for analysis gave: 



Fe 91.54 



Ni 7.26 



Co 52 



Cu 03 



Cr 05 



P 12 



S 17 



C 004 



Si Trace 



99. G94 

 The meteorite is distributed. 



BIBLIOGRAPHY. 



1. 1908: IIowell. Description of the Williamstown meteorite. Amer. Journ. Sci., 4th ser., vol. 25, pp. 49-50. (Cut 

 of etched surface.) 



WOOSTER. 



Wayne County, Ohio. 



Here also Wayne County, 1858. 



Latitude 40° 50 7 N., longitude 81° 58' W. 



Iron. Medium octahedrite (Om); Burlingtonite (type 17) of Meunier. 



Found 1S58; described 1864. 



Weight, about 22.5 kgs. (50 lbs.). 



This meteorite was first described by Smith 1 as follows: 



The existence of a mass of meteoric iron from Wayne County, Ohio, has been known to me for some years; but 

 I have delayed noticing its existence, hoping to obtain the mass, and thus give a more complete description of it than 

 I am able to do. 



My attention was first called to it by Prof. James C. Booth, of the United States Mint at Philadelphia, it having 

 been brought to him by Peter Williams, of Wooster, Wayne County, Ohio, who supposed it to be a mass of silver or 

 some other precious metal. Professor Booth saw at once that it was meteoric iron, and tried to procure it from Mr. 

 Williams; but from some notion of its possessing considerable intrinsic value he retained it, and since that time both 

 the iron and Mr. Williams have been lost sight of. 



Professor Booth detached a small portion of it, part of which specimen he placed at my disposal, with the fol- 

 lowing memorandum: "Meteoric iron, given me in 1858 by Peter Williams, of Wooster, Wayne County, Ohio. It 

 was a rounded mass, weighing about 50 pounds, and found by him in a woods near the above place while gathering 

 bowlders to pave a town. It exhibits the usual figures on application of acid to a smooth surface." 



As it is a well-authenticated meteorite, it is proper to make a record of it. Its specific gravity is 7.901, and it is 

 composed of — 



Iron 93. 61 



Nickel 6.01 



Cobalt 73 



Copper, very minute, not estimated. 



Phosphorus 13 



100. 48 

 There was a very small quantity of manganese, that has been estimated along with the nickel. 



