64 • ; 



much wider interval. As seen in the extensive exposures on the 

 James River for many miles below Richmond, this formation 

 presents a very close agreement with the soft sandstone found on 

 the Rappahannock and Potomac rivers |h corresponding posi- 

 tions, and like this has been long since referred by Prof. Rogers 

 to the upper part of the group of Mesozoic strata to which the 

 coal measures of eastern Virginia appertain. 



Prof. W. B. Rogers presented, in the name of his 

 brother, Prof. Henry D. Rogers, his extensive and com- 

 pleted work on the Geology of Pennsylvania, and the 

 general Geology of the United States, with maps and 

 illustrations executed in the highest style of art. 



The thanks of the Society were voted for the dona- 

 tion. 



Mr. Joseph B. Stearns, of Boston, was elected a Resi- 

 dent Member. 



The Annual Meeting was adjourned to the next regu- 

 lar meeting. 



May 18, 1859. Adjourned Annual Meeting. 



Dr. C. T. Jackson, Vice-President, in the Chair. 



The following communication from Mr. William P. 

 Blake, of Dahlonega, Ga., was read by the Secretary : — 



" Observatioxs on the Mineral Resources of the 

 Rocky Mountain Chain, near Santa Fe, and the 

 probable extent southwards of the rockt moun- 

 TAIN Gold Field." 



As the discovery of gold in quantity in the western part of 

 Kansas renders any information which may be given upon the 

 mineral resources of the Rocky Mountain region particularly 

 interesting at this time, I am induced to send to the Society a , 

 brief notice of some of the results of a tour of exploration made 



