Recent Publications 



-Grant, F. F., Worcester, P. S., and Henderson, Junius. Reconnais- 

 sance of the Geology of the Rabbit Ears Region, Routt, Grand and 

 Jackson Counties, Colorado. [Colorado Geological Survey, Bulletin 5, 

 Part I. Boulder, 19 13.] 



-Gregory, W. M. Geological Report on Arenac County. [Michigan 

 Geological and Biological Survey Publication 11. Geological Series 8. 

 Published as a part of the Annual Report of the Board of Geological and 

 Biological Survey for 191 1. Lansing, 191 2.] 



-Handbuch der Mineralchemie. Bd. Ill, 2 (Bog. 11-20). [Dresden und 

 Leipzig: Verlag von Theodor Steinkopff, 1913.] 



-Hay, Oliver P. Notes on Some Fossil Horses, with Descriptions of Four 

 New Species. [No. 1969. From the Proceedings of the U.S. National 

 Museum, Vol. XLIV, pp. 569-94, with Plates 69-73. Published AprU 30, 

 1913. Washington, 1913.] 



-Hazard, D. L. Results of Observations Made at the Coast and Geodetic 

 Survey Magnetic Observatory near Tucson, Arizona, 1909 and 1910. 

 [Department of Commerce and Labor, Coast and Geodetic Survey. 

 Washington, 19 13.] 



-Hennen, R. v., and Reger, D. B. West Virginia Geological Survey 

 County Reports, 1913. Marion, Monongahela, and Taylor Counties. 

 (With Maps of Topography, General and Economic Geology, and Agri- 

 cultural SoUs.) [West Virginia Geological Survey. Morgantown, 1913.] 



-Hitchcock, C. H. The Hawaiian Earthquakes of 1868. [Bulletin of the 

 Seismological Society of America, Vol. II, No. 3, September, 1912.] 



-Holmes, A. J. Second Annual Report of the Director of the Bureau of 

 Mines to the Secretary of the Interior. For the Fiscal Year Ended June 

 30, 191 2. [Washington, 19 13.] 



-Horton, F. W. Coal-Mine Accidents in the United States and in Foreign 

 Countries. [U.S. Bureau of Mines, Bulletin 69. Washington, 1913.] 



-Huntley, L. G. Possible Causes of the Decline of Oil Wells, and Sug- 

 gested Methods of Prolonging Yield. [U.S. Bureau of Mines, Technical 

 Paper 51. Washington, 1913.] 



-Iowa Geological Survey. Vol. XXI; Annual Reports, 1910 and 191 1, 

 with Accompanying Papers, Prepared in Co-operation with the U.S. 

 Geological Survey. [Des Moines, 1912.] 



-IwASAKi, C. A Study of Japanese Coals. [The Journal of the Geological 

 Society of Tokyo. Vol. XIX, No. 230, 1912.] 



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