372 Scientific Intelligence. 



No. 197. Columbus Folio, Ohio; by G. D. Hubbard, C. R. 

 Stauffer, J. A. Bownocker, C. S. Prosser and E. R. Cumings. 

 Pp. 15; with 5 pp. maps, illustrations, etc. 



No. 198. Castle Rock Folio, Colorado; by G. B. Richardson. 

 Pp. 13, with 6 pp. sections, maps, illustrations, etc. 



Monograph, Volume LIV. — The Mesozoic and Cenozoic 

 Echinodermata of the United States ; by William B. Clark 

 and Mayville W. Twitchell. Pp. 341 ; 108 pis. See p. 221, 

 February, 1916. 



Professional Paper, No. 95. Shorter Contributions to 

 General Geology, 1915. Advance chapters. 



Mineral Resources for 1915. — Numerous advance chapters 

 on the metals, petroleum, coal, etc. 



Bulletins. — Nos. 565, 568, 573. Results of Spirit Leveling. 

 R. B. Marshall, Chief Geographer. No. 565. Colorado, 1896 

 to 1914, inclusive. Pp. 192 ; 1 pi. No. 568. Missouri, 1896 to 



1914, inclusive. Pp. 219; 1 pi. No. 573. Arizona, 1896 to 



1915, inclusive. Pp. 123 ; 1 pi. 



No. 595. Fauna of the so-called Boone Chert near Batesville, 

 Arkansas ; by George H. Girty. Pp. 45 ; 2 pis. 



No. 598. Faunas of the Boone Limestone at St. Joe, Arkansas; 

 by George H. Girty. Pp. 50 ; 3 pis. 



No. 603. Geology and Oil Resources of the west border of 

 the San Joaquin Valley north of Coalinga, California ; by Robert 

 Anderson and R. W. Pack. Pp. 220 ; 14 pis., 5 figs. 



No. 604. The Phosphate Deposits of Florida ; by George C. 

 Matson. Pp. 101 ; 17 pis., 2 figs. See p. 300, March, 1916. 



No. 605. The Ellamar District, Alaska ; by S. R. Capps and 

 B. L. Johnson. Pp. 125 ; 10 pis., 10 figs. 



No. 606. Origin of the Zinc and Lead Deposits of the Joplin 

 Region, Missouri, Kansas, and Oklahoma ; by C. E. Siebenthal. 

 Pp. 283, 11 pis., 16 figs. See p. 375. 



No. 607. The Willow Creek District, Alaska ; by S. R. Capps. 

 Pp. 86 ; 15 pis., 5 figs. 



No. 608. The Broad Pass Region, Alaska ; by Fred. H. 

 Moffitt. With sections on Quaternary deposits, igneous rocks, 

 and glaciation ; by Joseph E. Pogue. Pp. 80 ; 8 pis., 3 figs. 



No. 609. The fractional precipitation of some ore-forming 

 compounds at moderate temperatures ; by Roger C. Wells. 

 Pp. 46 ; 2 figs. 



No. 615. Rhode Island Coal ; by George H. Ashley. Pp. 

 62 ; 5 pis., 3 figs. 



No. 616. The Data of Geochemistry, third edition ; by Frank 

 W. Clarke. Pp. 821. See p. 376. 



No. 617. Bibliography of North American Geology for 1914, 

 with subject index ; by John M. Nickles. Pp. 167. 



Nos. 620, 621. Contributions to Economic Geology, 1915. 

 No. 620, Part I. No. 621, Part II. Advance chapters. 



No. 622. Mineral Resources of Alaska. Report on progress 

 of investigations in 1914 ; by Alfred H. Brooks and others. 

 Pp. 380 ; 11 pis., 8 figs. 



