244 
American Journal of Conchology, Vol. 5, part xi. and also 
the jaw of Pineria Viegnensis, Annals, Vol. x. p. 26. 
The President, Dr. J. S. Newperry exhibited a specimen 
of Astrophyton Agassizii, from Nassau, N. P., and a number of 
Cretaceous Plants, from New Jersey and the far West, and 
made some remarks thereon. He also exhibited a Skull of 
the Prong-horned Antelope, in which the deciduous horns were 
half grown, covering the tips of the two prongs. This 
specimen was brought from Colorado by Dr. Hulse. 
* June 5th, 1871. 
The President in the chair. Twenty-four persons present. 
Pror. C. A. SEELY said that he had examined the supposed 
Asphaltum, exhibited by the President at the last meeting, 
and stated that in some respects it bears a strong resem- 
blance to Asphaltum, but it has not the odor of that 
substance when burned. It is very soluble in water, to the © 
extent of 56 per cent It contains 36 per cent. of mineral 
matter. He considered it to be the excrements, somewhat 
changed, of some animal, but it contained no Phosphoric or 
Uric acid. 
The following paper was read. 
Notes on Felsites of the Palisade Range. 
By P. ScHwEITzER, Pu. D. 
At one of the late meetings of the Lyceum of Natural 
History of New York City, Prof H. Wurtz read a paper on 
the Lithology of the Palisade range, in which he stated, that 
the so-called sandstone, underlying the trap, was not a sand- 
stone at all but a felsite, consisting principally of feldspar 
and quartz, agglutinated by opaline silica. This statement 
