ADDITIONS. 445 



NATIVE IRON (Page 383). 



Prof. Shepard refers to the occurrence of a mass of supposed native iron in the town of 

 Scriba, near Oswego. The weight was about eight pounds. It was found to be composed 

 of iron 99.68, silicon 0.20, calcium 0.09, aluminum traces. Specific gravity 7.50. Asso- 

 ciated with the above iron, there is a brittle mineral resembling graphite, a part of which is 

 magnetic, while the rest is not acted on by the magnet. It is thought to be ordinary magnetic 

 iron ore.* 



* Shepard. American Journal of Scitnce, XL. 366. 



