Recent Publications. 



-Bain, H. Foster, Zinc and Lead Deposits of Northwestern Illinois. [Bul- 

 letin No. 246, U. S. Geological Survey.] 



-Bauer, L. A., Terrestrial Magnetism; Results of Magnetic Observations 

 Made by the Coast and Geodetic Survey Between July 1, 1903, and June 30, 

 1904. [Appendix No. 3, Report for 1904.] 



-Bleininger, A. V. Manufacture of Hydraulic Cements. [Bulletin No. 3,. 

 Geological Survey of Ohio, 4th series.] 



-Clough, C. T., and Harker, Alfred. The Geology of West-Central Skye, 

 with Soay. Explanation of Sheet 70. [Memoirs of the Geological Sur- 

 vey of Scotland, 1904.] 



— Corstorphine, Geo. S. The History of Stratigraphical Investigation in 

 South Africa. [Reprinted from the Report of the South African Association 

 for the Advancement of Science, Johannesburg Meeting, 1904.] 



The Geological Relation of the Old Granite to the Witwatersrand Series 



(Read March 9, 1904). [Reprinted from the Transactions of the Geological 

 Society of South Africa, Vol. VII, Part I, 1904.] 



-Davenport Academy of Sciences, Proceedings of the, Vol. IX, 1901-1903. 

 [Davenport, Iowa, 1904.] 



-Hatch, Frederick H., and Corstorphine, Geo. S. The Petrography of 

 the Witwatersrand Conglomerates, with Special Reference to the Origin of 

 the Gold (read November 14, 1904). [Reprinted from the Transactions of 

 the Geological Society of South Africa, Vol. VII, Part III, 1904.] 



The Geology of the Bezuidenhout Valley and the District East of Johan- 



nesburg (read August 8, 1904). [Reprinted from ibid., Part II, 1904.] 

 -Hatch, Frederick H. The Oldest Sedimentary Rocks of the Transvaal 



(read December 12, 1904). [Reprinted from ibid., Part III, 1904.] 

 -Hobbs, Wm. Herbert. The Frontier of Physiography. [Reprinted from 



Science, N. S., Vol. XVIII (1903), No. 460, pp. 538-40.] 



Lineaments of the Atlantic Border Region. [Bulletin of the Geological 



Society of America, Vol. XV (1904), pp. 483-506, Plates 45-47.] 

 The Tectonic Geography of Eastern Asia (reviews and translations). 



[From the American Geologist, Vol. XXXIV (1904), pp. 69-80, 141-51, 



214-26, 283-91, 371-78.] 

 -Maitland, A. Gibb. Preliminary Report on the Geological Features and 



Mineral Resources of the Pilbara Goldfield. [Bulletin No. 15, Geological 



Survey of Western Australia; Perth, 1904.] 

 -Maryland Geological Survey, Highway Division. The New State and Road 



Law; How Improved Roads May be Secured under its Provisions. [1904.] 



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