Recent Books and Pamphlets. 403 
STERKI, Dr. V.—Observations on Vallonia., Extr. Proceeds. Phila. Acad., 1893. 
From the author. 
STEVENSON, J. J.—On the Origin of the Pennsylvania Anthracite. (Extr. Journ. 
l., Vol. I, 1893.) ——On the Use of the Name “ Catskill. ” (Extr. Am. Journ. 
Sci., Vol. XLVI, 1893.) From the author. 
Tarr, R.S.—Glacial Erosion. Extr. Am. Geol., Vol. XII, 1893. From the 
4 preg 
—Ueber einige Muriden aus Kamerun. Mitgetheilt der PE 
“sate det Wissensshaften zu Upsala, 27 Juni, 1893. From the aut 
Ad 
` XVI, $ mit 
WHIPPLE, L. E.—The Philosophy of Mental Foaling: New York, 1893. From 
the Metaphys. Pub. Co. 
, J. F.—Presidential Address. The Cretaceous System of Canada. 
Extr. Trans. Roy. Soc., Canada, 1893. From the author 
Wilder aa kay Book: A collection of igén papers dedicated to Pro- 
fessor Burt Green Wilder at the close of his twenty-fifth year of service in Cornell 
> shen (1808-1808) By some of his former students. Ithaca, N. Y., 1893. 
rom Mr. Burt Wilder 
