Recent Publications. 
337 
morphism of a gabbro occurring in St. Lawrence county, N. Y., C. H. 
Smyth, Jr.; Notes on Glacial gravels in the lower Susquehanna valley, 
H. B. Bashore ; The Bearpaw mountains, Montana, W. H. Weed and 
L. V. Pirsson ; Pleistocene marine shore lines on the south side of the 
St. Lawrence valley, Robert Chalmers; Occurrence of free gold in 
granite, G. P. Merrill. 
Amer. Nat., April. The history and principles of geology and its aim, 
J. C. Hartzell, Jr.; Life before fossils, Charles Morris. The Paleozoic 
reptilian order Cotylosauria, E. D. Cope ; Notes on the fossil Mammalia 
of Europe Pt. n—-On the affinities of the genus Tapirulus, Charles 
Earle. 
Science, Mch. 27. Current notes on physiography, W. M. Davis; 
The Philadelphia brick clays, R. D. Salisbury. 
Science, Apr. 3. Expedition to Seriland, W J McGee ; The temper¬ 
ature of the earth’s crust, Ellen Hayes ; The prerogatives of a state 
geologist, Erasmus Haworth. 
Science, Apr. 10. Naval erosion, G. W. Tower. 
The Mining Bulletin, Mch. An estimate of geological time, W. A. 
Buckhout; Official geology, H. H. Stoek. 
IV. Excerpts and Individual Publications. 
The fauna of the Magnesian series (Description of fossils), F. W. 
Sardeson. Bull. Minnesota Acad. Nat. Sci., vol. 4, no. 1, pp. 92-105, pis. 
5-6, 1896. 
Ueber das Carbon des Mississippithales, C. R. Keyes. N. Jahrb. f. 
Mineralogie, etc., Bd. 1, pp. 96-110, 1896. 
The Permian system in Kansas, F. W. Cragin. Colo. College Studies, 
vol. 6, pp. 1—48, Mch., 1896. 
On the stratigraphy of the Platte series, or upper Cretaceous of the 
plains, F. W. Cragin. Ibid., pp. 49-52. 
Preliminary notice of three late Neocene terranes of Kansas, F. W. 
Cragin. Ibid., pp. 53-54. 
The nickel deposits near Riddle’s, Oregon, W. L. Austin. Read before 
the Colo. Sci. Soe., Jan. 6, 1896 ; 27 pp. 
Economic geology of the Mercur mining district, Utah, J. E. Spurr, 
with introduction by S. F. Emmons. U. S. Geol. Sur., 16th Ann. Rept., 
pt. 2, pp. 343-455, pis. 25-34, 1895. 
Petrographical characters, of some rocks from the area of the Klam- 
loops map-sheet, British Columbia, W. F. Ferrier. Geol. Sur. Canada, 
Ann. Rept., vol. 7, pp. 349B-400B, 1896. 
Greenland ice fields and life in the north Atlantic, with a new discus¬ 
sion of the causes of the Ice age, G. F. Wright and Warren Upham. 
xv and 407 pp., cuts and maps ; D. Appleton and Co., New York, 1896. 
Sur la meteorite tombee le 9 avril 1894 pres de Fisher (Minnesota), 
N. H. Winchell. Comptes Rendus, t. 122, no. 11, 3 pp., Mch. 16, 1896. 
V. Proceedings of Scientific Laboratories , etc. 
Bull. Dept, of Geol. Univ. of Cal., vol. 1, no. 13, pp. 363-370, Mch., 
1896. Sigmogomphus le contei, a new castoroid rodent from the Plio¬ 
cene, near Berkeley, Cal., J. C. Merriam. 
