I In Scientific Intelligence. 



than that on which carbon deposits were laid down dui"ing any 

 preceding period of similar duration " ; nearly a hundred pages 

 of tbe memoir arc devoted to them, c. s. 



8. The Echinoidea of the Buda limestones y by F. L. Whit- 

 nkv. Bull. Amer. Paleontology, No. 26, L916, 87 pp., 9 pis.— 

 Here arc described ten species of cchinids from tlic Coinanchian 

 of Texas, four of which are new. ' c. s. 



9. Publications of the United States Geological Survey, 

 George Oris Smith, Director. — Recent publications of the IT. S. 

 Geological Survey are noted in the following list (continued from 

 pp. 371-37:}, April, 10 Hi): 



Topographic Atlas. — Fifty-two sheets. 



Folios.— No. 109. Silver City Folio, New Mexico ; by SidnIcy 

 Paigk. Pp. 10 ; 3 maps, 13 pis., 17 figs. 



No. 201. Minneapolis-St. Paul Folio, Minnesota ; by Frederick 

 W. Sardeson. Pp. 14; 8 maps, 22 pis., 14 figs. 



Professional Papeiis. — No. 80. The Fauna of the Chapman 

 Sandstone of Maine, including descriptions of some related 

 species from the Moose River Sandstone ; by Henry Siialer 

 Williams, assisted by Carpel Leventiial Breger. Pp. 347 ; 

 27 pis., 2 figs. See p. 160, August, 1916. 



No. 91. The Lower Eocene Floras of Southeastern North 

 America ; by Edward W. Berry. Pp. 355; 117 pis., 16 figs. 



No. 98. Shorter Contributions to General Geology, 1916. Parts 

 A to N. Pp. 1-261. See p. 438. 



Mineral Resources for 19] 5. — Numerous advance chapters. 



Bulletins. — No. 610. Mineralogic Notes. Series 3 ; by W a l- 

 de.ua r T. Schai.ler. Pp. 164 ; 5 pis., 00 figs. See p. 85, July, 

 1916. 



No. 618. Geology and Underground Water of Luna County, 

 New Mexico ; by N. IT. Darton. Pp. 188 ; 13 pis., 15 figs. 



No. 619. The Caddo Oil and Gas Field, Louisiana and Texas; 

 by George C. Matson. ' Pp. 62 ; 8 pis., 5 figs. 



Nos. 620, 621. Contributions to Economic Geology, 1015. 

 No. 620, Part I, M, O. No. 621, Part II, L, M, N, O. 



No. 623. Petroleum Withdrawals and Restorations affecting 

 the public Domain ; by Max W. Ball. Compilation by Lucetta 

 W. Stockbridge. Pp. 427 ; 9 pis. (in pocket). 



No. 626. The Atlantic Gold District and the North Laramie 

 Mountains; Fremont, Converse, and Albany Counties, Wyoming. 

 Papers by Arthur C. Spencer. Pp. 85; 5 pis., 6 figs. 



No. 627. The Lignite Field of Northwestern South Dakota ; 

 by Dean E. Winchester, C. J. Hares, E. Russkll Lloyd, and 

 E M. Parks. Pp. 160; 11 pis., 3 figs. 



No. 628. Geology and Coal Resources of Castle Valley in 

 Carbon, Emery, and Sevier Counties, Utah ; by Charles T. 

 Lupton. Pp. 86; 12 pis., 1 fig. 



No. 620. Natural Gas Resources of Parts of North Texas. 

 Gas in the area north and west of Fort North; by Eugene W. 

 Siiaw. Gas Prospects south and southeast of Dallas; by George 

 C. Matson; with Notes on the Gas Fields of Central and Southern 

 Oklahoma; by Carroll II. Wegemann. Pp. 129; 7 pis., 13 figs. 



