Recent Publications. 186 
flint implements in Wyoming county, N. Y., by I. P. Bishop; A cata- 
logue of the specimens arranged by Prof. E. Emmons, as representatives 
of the Taconic System. 
Ninth Ann. Rep. of the State Geologist of N. Y. for 1889 contains: A 
notice by Prof. Hall of the slow publication of his pahvontological 
work; On Syringothyris, Winchell, and its American species, by Chas. 
Schuchert; List of species of the American Palaeozoic Orthis, Spirifera, 
Spiriferina, and Syringothyris, by Chas. Schuchert; New Forms of 
Dictyospongidte from the rocks of the Chemung group, by James Hall. 
Tenth Annual Report of the State Geologist of N. Y. for 1890 contains: 
The genera of the Palaeozoic Brachiopoda; Preliminary notice of a new 
Genus among the Brachiopoda, by James Hall; Quaternary Geology of 
the Hudson River valley, by Heinrich Ries, and the following by J. M. 
Clarke which were reviewed in the Geologist for March, 1892: Notes 
on the Genus Acidaspis, Note on Coronura Aspectaus, Conrad (sp.). 
Observations on the Terataspis Gr^ndis, Hall. 
N. Y. St. Museum. Forty-third Annual Report of the Regents for 
1889, pp. 306. Albany, 1890. 
N. Y. St. Museum. Forty-fourth Annual Report of the Regents for 
1890, pp. 404. Albany, 1892. 
Geol. Surv. of N. Y. Paheontology: Vol. viii. The Genera of Palaeo- 
zoic Brachiopoda, by James Hall, assisted by J. M. Clarke, pp. 367 with 
42 plates. 
Geol. Surv. of Tex. Bui. No. 2 The Soils and Waters of the Upper 
Rio Grande and Pecos valleys, by H. H. Harrington, pp. 26, Austin, 1890. 
Geol. Surv. of Tex. Bui. No. 3. Reconnoissance of the Guadaloupe 
mountains, by R. S. Tarr, pp. 42, Austin, 1892. 
Geol. Surv. of Tex. Second Report of Progress, by E. T. Dumble for 
1891, pp. 91. Austin, 1893. 
Geol. Surv. of Ala. Bui. No 3. The lower Gold Belt of Alabama, by 
Wm. B. Phillips, pp. 97, with map. Montgomery, 1892. 
Geol. and Nat. Hist. Surv. of Can. Contributions to Canadian 
Palaeontology. Part iv, by Dr. D. Rust, pp. 10, with 3 plates. 
U. S. Nat. Mus. Handbook for the Dept. of Geology. Part i. 
Geognosy.— The Materials of the Earth's Crust, by Geo. P. Merrill, pp. 
88, with 2 plates. Washington, 1892. 
Geol. Surv. of Ark. Ann. Rep. for 1890. Vol. irr. Whetstones and 
the Novaculites of Arkansas, by L. S. Griswold, pp. 443, illustrated. 
Little Rock, 1892. 
//. Proreedings of Scientific Societies. 
Bui. Phil. Soc. of Washington, Vol. xi, contains : On Some of the 
Greater Problems of Physical Geology, by C. E. Button ; On the Crys- 
tallization of Igneous Rocks, by J. P. Iddings ; The Mineral Composi- 
tion and Geological Occurrence of Certain Igneous Rocks in the Yellow- 
stone National Park, by J. P. Iddings ; On Certain Peculiar Structural 
Features in the Foot-Hill Region of the Rocky Mts. near Denver, Colo., 
by G. H. Eldridge ; Constitution and Origin of Spherulites in Acid 
Eruptive Rocks, by Whitman Cross ; Mohawk Lake Beds, by H. W. 
