402 Scientific Intelligence. 



II. Geology and Mineralogy. 



1. United States Geological Survey: Charles D. Wal'cott, 

 Director. — Recent publications of the U. S. Geological Survey 

 are included in the following list. Notices are for the most part 

 deferred till a later number. 



Folios: No. 122. — Tahlequah Quadrangle, Indian Territory- 

 Arkansas; by Joseph A. Taff. 



No. 123. — Elders Ridge Quadrangle, Pennsylvania ; by Ralph 

 W. Stone. 



No. 124. — Mount Mitchell Quadrangle, North Carolina-Ten- 

 nessee ; by Arthur Keith. 



No. 125. — Rural Valley Quadrangle, Pennsylvania; by Charles 

 Butts. 



Monograph, No. XL VIII. — Status of the Mesozoic Floras of 

 the United States. Second Paper ; by Lester F. Ward, with 

 the collaboration of William M. Fontaine, Arthur Bibbins and 

 G. R. Wieland. Part I, Text, pp. 616. Part II, plates i-cxix. 



Professional Papers : No. 34. — The Delavan Lobe of the 

 Lake Michigan Glacier of the Wisconsin Stage of Glaciation 

 and Associated Phenomena ; "by William C. Alden. Pp. 106, 

 with 15 plates. See p. 409. 



No. 36. — The Lead, Zinc and Fluorspar Deposits of Western 

 Kentucky ; by E. O. Ulrich and W. S. Tangier-Smith. Part I, 

 Geology and General Relations by E. (). Ulrich. Pp. 1-105, 

 plates i-vii. Part II, Ore Deposits and Mines by W. S. Tangier- 

 Smith. Pp. 107-218, plates viii-xv, 31 text-figures. 



No. 38. — Economic Geology of the Brigham Mining District, 

 Utah ; by John Mason Boutwell. With a Section on Areal 

 Geology by Arthur Keith and an Introduction on General 

 Geology by Samuel Franklin Emmons. Pp. 413, 49 plates, 10 

 figures. 



Bulletins — No. 208. — Descriptive Geology of Nevada south 

 of the Fortieth Parallel and Adjacent Portions of California ; 

 by Josiah Edward Spurr. Second edition. Pp. 229, 8 plates. 

 Map in pocket. 



No. 235. — A Geological Reconnaissance across the Cascade 

 Range near the Forty-ninth parallel ; by George Otis Smith 

 and Frank C. Calkins. Pp. 103, 4 plates. It is found that 

 " the Cascade Mountains near the forty-ninth, parallel are com- 

 posed in greater part of igneous rocks that belong mainly to 

 great batholithic masses of rather acidic composition quite com- 

 parable (in volume) with the immense intrusions of the Sierra 

 Nevada." 



No. 237.— Petrography and Geology of the Igneous Rocks of 

 Highwood Mountains, Montana ; by Louis Valentine Pirsson. 

 Pp. 208, 1 plates, 8 figures. 



No. 245. — Results of Primary Triangulation and Primary 

 Traverse, fiscal year 1903-04 ; by Samuel S. Gannett. Pp. 

 328 with map. 



