PROCEEDINGS OF THE [March, 1859. 



and it consisted of a rapid succession of distinct shocks. He very clearly ob- 

 served the composite character of the wave. It was not one shock, but at least 

 five or six in rapid succession. The sensation produced was one of very slight 

 nausea, and desire to get into the open air. It was Mr. McCrady's impres- 

 sion that there were two sets of vibrations one vertical and one horizontal. 

 There was no clattering or rattling in the sound except when the shock pass- 

 ed the village, the deep lumbering rumble being the sound emitted by the 

 earth, and heard as distinctly different from the clatter of the houses. 



Prof. Gibbes exhibited specimens of Selaginella convoluta, 

 and Lyeopodium squamatum. 



MARCH 1st, 1859. 



Vice-President Smith in the chair. 



Contributions to the Collection. 



Hydnum tricliodontum ; Lenzites vitulina ; and a Sterewn, 

 presented by Prof. L. R. Gribbes. 



Contributions to the Library. 



Hints to Craniographers, J. Aitken Meigs, M. D. 



Mosaic account of the Creation, James C. Fisher. M. D. 



Proceedings of the Academy of Natural Sciences Philadelphia 

 Nos. 14-20 (Oct.-Dec. 1858) and No. 1, (Jan. 1859) 



Descriptions of Unionidge &c., by Isaac Lea, LL. D. Present- 

 ed by the Author. 



Yerhandlungen der Zoologisch-botanischen Yereins in Wien. 

 Band VII. Jahrgang 1857. Fromthe Society and accompanied 

 by a letter, soliciting exchange. Accepted, and thanks of the 

 Elliott Society tendered for this donation. 



Personen-, orts- und sachs-register der fiinf ersten Jahr- 

 gange (1851-1855) der Sitzungs-bericht und Abhandlungen des 

 Wiener Zoologish-botanischen Vereins. Wien, 1857. Fron^ the 

 Society. 



A letter was read from Dr. James Moultrie, tendering his 

 resignation from the Presidency of the Society. Accepted. 



