63 



from the neighborhood of Sonora, where they are sometimes 

 used as blacksmiths' anvils and for corner stones to buildings. One 

 specimen contained between five and six per cent, of Nickel, 

 showing it to be meteoric. It is said that these masses are quite 

 common, even of very large size, near Santa Rosas. 



The Chairman likewise exhibited a fragment in bronze, of a 

 Chilian instrument, probably a crowbar, It contained 7.615 parts 

 of tin, the remainder being copper. This bronze is well adapted 

 for such instruments as were to be hammer-hardened. Ancient 

 Egyptians' bronze tools contain from 17 to 2*^ per cent, of tin. 



The Corresponding Secretary read letters fronri various 

 societies and institutions, acknowledging the reception of 

 copies of the Journal and Proceedings of the Society, as 

 follows : From Harvard College, Essex Institution, Ameri- 

 can Philosophical Society, Societe de Geographic at Paris, 

 Naturhistorischer Verein at Bonn, Bibliothekariat der K. 

 Bayerischen Akademie, K. Akademie der Wissenchaften at 

 Vienna : also from the office of Indian Affairs, accompa- 

 nying the work of Schoolcraft on the Indian Tribes of the 

 United States. 



Prof. Lunsford P. Yandell, of Louisville, Ky., was elected 

 Corresponding Member. 



July 19, 1854. 

 Dr. D. H. Storer, Vice-President, in the Chair. 



Prof. Henry D. Rogers presented a paper entitled, " A 

 Description of New Species of Fossil Plants, from the An- 

 thracite and Bituminous Coal Fields of Pennsylvania, col- 

 lected and described by Leo Lesquereux, with Introductory 

 Observations by Henry D. Rogers." 



Referred to the Publishing Committee, for insertion in the 

 next number of the Journal. 



