NAMES OF THE COMMISSION 



TO WHOM THIS MEMOIR HAS BEEN REFERRED. 



Major Alfred Mordecai, - - - Ordnance Dept., U. S. A. 

 Captain Frederick A. Smith, - Engineer Corps. U. S. Jl. 

 Lieutenant M. L. Smith, - - - Topogra])Jiical Corps^ U. S. A. 



Washington, D. C. 



December, 1849. 



JOSEPH HENRY, 

 Secretary of the Smithsonian Institution. 



