22 . TRANSACTIONS OF THE [oor. 30, 
Variegated clays and objects made from them. Gay Head. 
Ferruginous sandstone fragments, containing molluses. In- 
dian Hill. 
Ferruginous sandstone and concretions, containing cretaceous 
leaves and molluscs. Long Island and Staten Island. 
Variegated clays. Long Island and Staten Island. 
Mounted plants, representing part of the summer flora of 
Martha’s Vineyard. 
Statep MEETING. 
October 30th, 1893. 
Prof. R. P. WHITFIELD in the chair, and thirty-six persons 
present. 
Dr. E. 8. F. Arnold exhibited specimens of limonite from St. 
John’s River, Florida; he stated that the deposit is about five 
feet below the surface, and from one to four feet thick. 
Prof. A. H. Chester exhibited a specimen of rhodonite from 
Franklin Furnace, N. J. 
SECTION OF GEOLOGY AND MINERALOGY. 
Prof. WHITFIELD in the chair. 
The following papers were read : 
“The Ore-bodies at Franklin Furnace and Ogdensburg, N. 
J.,” by Jas. F. Kemp. 
The paper was discussed by Pror. A. H. CHEstTER, who called 
attention to the discovery there by F. L. Nason of a new min- 
eral, apparently a manganese mica, near manganophyllite. 
By Basurorp Dean, “On the Fin-structures of Diplurus.” 
The general homologies of the structures of Coelacanthids were 
briefly noted, and the evidence was considered for regarding 
these as descendants of forms possessing Ceratodus-like paired 
and unpaired fins. The character of notochordal sheath may be 
determined in the types of Diplurus longicaudatus, Newberry. 
