774 PROCEEDINGS OF THE ACADEMY OF [DeC, 



REPORT OF THE MINERALOGICAL AND GEOLOG- 

 ICAL SECTION. 



The Director of the Mineralogical and Geological Section respect- 

 fully reports that nine meetings have been held during the year, 

 besides six excursions to points of geological or mineralogical 

 interest. The average attendance at the meetings has been eight 

 members, on the excursions thirty-two. 



Additions to the Academy's collection of mineral and geological 

 specimens include many of interest, though in number not as 

 great as in previous years. 



An elaborate paper was read before the Section by Mr. John S. 

 Ash on the Buckingham Fault, which elicited considerable discus- 

 sion, participated in by Messrs. Lyman, Woolman and others. 

 There were read also other papers on Arizona lignite, New Jersey 

 gravels, and on various questions relating to the geology of Penn- 

 sylvania. 



Mr. Frank J. Keeley exhibited a number of rock sections pre- 

 pared by himself, and made remarks upon them, particularly upon 

 their inclusions. 



The first excursion was made to Langhorne and vicinity, for the 

 examination of the New Red Rocks in that neighborhood, and to 

 Van Artsdalen's quarry ; the second and third to the vicinity of 

 Yardley and New Hope, the fourth to Lodel creek, near Grater's 

 ford on the Perkiomen, and to Skippack creek. At Lodel creek 

 a slab was obtained showing ripple marks and reptilian and 

 amphibian footprints. The fifth was to West Chester, where the 

 cabinet of Mr. W. W. Jefferis was inspected and also Mr. Sharp- 

 less' collection of Indian relics, after which a number of localities 

 in Ihe vicinity were visited. The sixth excursion was to the fossil 

 beds in the Mattewan and other formations in the vicinity of 

 Swedesboro and Mullica Hill. 



The following officers of the Section for the ensuing year were 

 elected : 



Director, ..... Theodore D. Rand. 



Vice-Director, 

 Treasurer, 

 Conservator, 

 Recorder, 



Benjamin Smith Lyman. 

 Emma Walter. 

 F. J. Keeley. 

 Charles Schiiffer. 

 Respectfully submitted, 



Theodore D. Rand, Director. 



