Geology and Mineralogy. 91 



that have been successively under consideration. The paper has 

 involved a vast amount of labor in its preparation, and will be of 

 great value to all interested in the department. The localities in 

 the United States of fossil plants, and the geological periods of 

 the plants of each, are presented in colors on a map. 



(3.) Geology of the Lassen Peak District • by J. S. Diller. 

 32 pp. — Mr. Diller has commenced his study of the geology of 

 the Cascade Range with that of the Lassen Peak district, and 

 here gives an account of the latter region — its general features, 

 stratigraphical structure, and upheavals in connection with the 

 structure of the Sierras and their relation to volcanic action in 

 the district. The formations described are the Auriferous slates, 

 Carboniferous limestone and serpentine; the Chico beds of the 

 Cretaceous and the Miocene. The important conclusions with 

 regard to the faults and constitution of the Sierras, reached by 

 Mr. Diller, are briefly noticed on page 152 of vol. xxxiii of this 

 Journal, 1887. 



3. Bulletin of the Geological Society of America, vol. 1. — A 

 list of the papers published in separate parts constituting the 

 first volume of the Geological Society of America is given, so 

 far as then issued, on page 402 of the last volume of this Journal, 

 There have also appeared papers by J. B. Tyrrell on the Post- 

 Tertiary deposits of Manitoba and the adjoining territories of 

 Northwestern Canada (an abstract of which is given on page 38) ; 

 R. W. Ells, the Stratigraphy of the Quebec Group (reviewed in 

 the last volume of this Journal by C. D. Walcott) ; T. C. Cham- 

 berlin, some additional evidences bearing on the Interval between 

 the Glacial Epochs ; H. S. Williams, the Cuboides zone and its 

 Fauna, a discussion of methods of Correlation; E. Brainard and 

 H. M. Seeley, the Calciferous formation in the Champlain Valley 

 with a supplement on the Fort Cassin Rocks and their fauna by 

 R. P. Whitfield. The volume closes with the Proceedings of the 

 Annual Meeting held at New York, December 26, 27, 28, 1889, 

 by Prof. J. J. Stevenson, Secretary. 



The titles of the papers and the names of their authors are 

 sufficient indication that the volume is one of unusual importance 

 as regards American geology, giving a long step of progress to 

 the science. There are several which would be noticed particu- 

 larly in this place if space allowed. 



4. The Salt Hange in India. — Dr. Wm. Waagen, in the 

 Memoirs of the Geological Survey of India, Ser. xiii, on the Salt 

 Range, vol. iv, Part 1, 1889, points out that there is distinct 

 stratigraphic unconformability in the range at the base of the 

 Carboniferous. Another unconformability exists above the Neo- 

 comian and below the beds containing Cardita Beaumonti, to 

 which period the Deccan traps are referred. 



5. The Collection of Building and Ornamental Stones in the 

 TJ. S. National Museum. A Handbook and Catalogue, by 

 George P. Merrill, Washington, 1889 (Rep. Smithsonian Instit., 

 1885-86, Part II, pp. 277-648).— The collection of building and 



