COLORADO METEORIC IRONS. 



1. Eussel G-ulch Iron. 



I have known of the existence of a new meteoric iron from 

 Eussel Gulch in Colorado for about two years, but it was only 

 recently that it passed into my hands. I first heard of it in 

 the possession of Mr. Fisher, of New York, who subsequently 

 turned it over to Prof. C. F. Chandler, of Columbia College, 

 New York, who kindly submitted it to me, as I am furnished 

 with the necessary means for cutting up and scrutinizing thor- 

 oughly this class of bodies. 



The mass of iron is acconrpanied with the following label : 

 "Meteoric iron found in Eussel G-ulch, February 18, 1863, by 

 Mr. Otho Curtice. Weight twenty-nine pounds. Brought to 

 New York, February, 1864." 



The mass measures in its extreme length, breadth, and thick- 

 ness 8-Jx 7f X 5-J- inches. It is perfect in all parts except at one 

 extremity, and, as stated above, weighs twenty-nine pounds. 



The iron is one of medium hardness, with the density 7.72, 



and when cut through was found to contain a few small nodules 



of iron pyrites. It is attacked readily by nitric acid, and gives 



bold Widmannstattian figures without very sharp angles. It 



resists the action of the air and moisture very well, and is 



consequently but little altered on the surface. No siliceous 



minerals could be traced in any of the crevices. On analysis 



its composition was found to be 



Iron 90.61 



Nickel 7.84 



Cobalt 78 



Copper, minute quantity. 



Phosphorus .02 



99.26 

 I have not made any further observations in relation to the 

 presence of copper in meteoric iron since 1852, when I called 

 attention to it. Since then I have become more confirmed in 



