LETTER OF TRANSM1TTAL, 



WASHINGTON, D. C., May 1, 18(id. 



DEAR SIK : I submit herewith my report on the geology of the country traversed 

 by the San Juan Exploring Expedition; in which I had the honor to serve under your 

 command. 



Very respectfully, your obedient servant, 



J. S. NEWHKKRY. 

 Capt. J. N. MACOMH, 



Topographical Eni/'ntccrs, United States Army. 



