Geology and Mineralogy. 83 



the lucidity and conciseness which are characteristic of the 

 author. Tiiey form an admirable resume of the present state of 

 theoretical physics and will be read with pleasure and profit by 

 any student of the science. Tliere is perhaps a tendency toward 

 dogmatism in regard to the pliilosophical interpretation of cer- 

 tain results ; but the class of readers to whom the book is 

 addressed will have a sufficiently wide knowledge of the subject 

 to escape the danger of overlooking other points of view. 



n. A. B. 

 10. The National Physical Laboratory. Report for the Year 

 1909. 103 pp., with 2 plates. Teddington, 1910 (W* F. Parrott). 

 — The annual report of the British Standards Laboratory gives 

 evidence of the excellent character of the work which is being 

 done there. The organization of the laboratory embraces five 

 departments : Physics, Engineering, Metallurgy, the Richmond 

 Observatory, and the Eskdalemuir Observatory. Brief reports 

 are given of the work accomplished during 1909 by each depart- 

 ment, and of their plans for 1910. An interesting featui-e is the 

 steady development of international cooperation with the Bureau 

 of Standards and the Geophysical Laboratory at Washington, 

 with the German Reichsanstalt, and other national laboratories. 



H. A. B. 



II. Geology and Mineralogy. 



1. United States Geological Survey ; George Otis Smith, 

 Director. — Recent publications of the tJ. S. Geological Survey are 

 noted in the following list (continued fi'om xxix, pp. 363-365): 



Topographic Atlas. — Forty-two sheets. 



Folios. — No. 170. Mercersburg-Chambersburg Folio, Penn- 

 sylvania; by George W. Stose. Pp. 19, with 18 figures, one 

 chart, and 3 colored maps. 



No. 173. Laramie-Sherman Folio ; by N. H. Darton, Eliot 

 Blackweldkr, and C. E. Siebenthal. Pp. 17, with 7 colored 

 maps and 1 1 figures. 



Bulletins. — No. 398. Geology and Oil Resources of the 

 Coalinga District, California ; by Ralph Arnold and Robert 

 Anderson. With a Report on the Chemical and Physical Proper- 

 ties of the Oils ; by Irving C. Allen. Pp. 354, 52 plates, 9 

 figures. 



No. 406. Preliminary Report on the McKittrick-Sunset Oil 

 Region, Kern and San Luis Obispo Counties, California ; by 

 Ralph Arnold and Harry R. Johnson. Pp. 225, 5 plates, 2 

 figures. 



No. 407. Geology and Ore Deposits of the Bullfrog District, 

 Nevada ; by F. L. Ransome, W. H. Emmons, and G. H. Garret. 

 Pp. 130, 14 plates, 20 figures. 



No. 415. Coal Fields of Northwestern Colorado and North- 

 eastern Utah ; by Hoyt S. Gale. Pp. 265, 22 plates, 8 figures. 



No. 417. Mineral Resources of the Nabesna-White River 

 District, Alaska ; by F. H. Mofeit and Adolph Knopf. With 



