Author's Catalogue. 319 
LAMBE, L. M. 
On Trionyx foveatus, Leidy and Trionyx vagans, Cope, from the 
Cretaceous rocks of Alberta. (Summary report of the Geol. Sur. 
Can. for 1901, pp. 6. 4 pls., 1902.) 
MATTHEWS, G. F. 
Acrothyra and Hyolithes, a comparison. (Trans. Roy. Soc., 
Can., vol. 7, sec. iv, pp. 93-106, 1901.) 
Hyolithes gracilis, and related forms from the Lower Cambrian 
of the St. John Group. (Trans. Roy. Soc., Can., vol 7, sec. iv, pp. 
109-111, 1901.) / 
A backward step in Paleobotany. (Trans. Roy. Soc., Can., vol. 
7, sec. iv, pp. 113-122, 1902.) 
MERRILL, GEO.’P. 
Report of the Department of Geology for the year 1839-1900. 
(Smith. Inst., U. S. Nat. Mus., Rep. for 1900, pp. 45-57.) 
NEWSON, J. F. 
Drainage of southern Indiana. (Jour. Geol., vol. 10, Feb-Mar., 
1902, pp. 166-181.) 
O’HARRA, C. C. 
The mineral wealth of the Black Hills. Bull. No. 6, South Da- 
kota Schol of Mines, pp. 88. Rapid City, Jan., 1902. 
OSBORN, H. F. 
Homoplasy as a law of latent or potential homology. (Am. Nat., 
vol. 36, Apr., 1902. pp. 259-271.) 
PACKARD, A S. 
An afternoon at Chelles and the earliest evidence of human in- 
dustry in France. (Pop. Sci. Month., vol. 61. May, 1902, pp. 81-83.) 
POOR, CHARLES LANE (Editor). 
Annals of the New York Academy of Sciences, vol. 14, Part 2, 
Jan. 1901-Dec. 1902. 
RIGGS, ELMER S. 
The Dinosaur beds of the Grand river valley of Colorado. 
(Field Col. Mus., Geol. Ser., vol. 1, No. 9, pp. 267-274, Sept., 1901.) 
RIGGS, ELMER S. 
The fore leg and vectoral girdle of Morosaurus, with a note on 
the genus Camarosaurus. (Field Col. Mus., Geol., Ser., vol. 1, No. 
10, pp. 275-281, Oct., 1901.) 
SHERZER, W. H. 
Ice work in southeastern Michigan. (Jour. Geol., vol. 10, Feb.- 
Mar., 1902, pp. 194-216.) 
SIMONDS, F. W. 
Dr. Ferdinand von Roemer [portrait]. (Amer. Geol., vol. 29, 
Mar., 1902, pp. 131-140.) 
