CHAPTER I. 



THE IRON SERIES (IN PART). INTRODUCTORY REMARKS ON 

 IRON ORES. LIMONITE. SIDERITE. 



GENERAL LITERATURE. 



Birkinbine, J. " Prominent Sources of Iron Ore Supply," M. E., 



XVII. 715. Statistical; Rec. 



Various statistical papers in the volumes on Mineral Re- 

 sources, U. S. Geol. Survey, especially 1886, p. 39 ; 1887, 

 p. 30. 



Chester, A. H. " On the Percentage of Iron in Certain Ores/'' M. E., 

 IV. 219. 



Dunnington, F. P. " On the Formation of the Deposits of Oxides 

 of Manganese," Amer. Jour. Sci., iii., XXXVI. 175. The 

 paper treats of Iron also. 



Hewitt, A. S. , "Iron and Labor," M. E., September, 1889. The 



paper contains valuable statistics. 

 " A Century of Metallurgy," M. E., V. 164. 



Hunt, T. S. " The Iron Ores of the United States," M. E., October, 

 1890. 



Kimball, J. P. " Genesis of Iron Ores by Isomorphous and Pseudo- 

 morphous Replacement of Limestone," Amer. Jour. Sci., 

 September, 1891, p. 231. Continued in Amer. Geologist, 

 December, 1891. 



Julien, A. A. "The Genesis of the Crystalline Iron Ores," Trans. 

 Phil. Acad. Nat. Sci., 1882, p. 335 ; Engineering and Min- 

 ing Journal, Feb. 2, 1894. 



" Origin of the Crystalline Iron Ores," Trans. JW. Y. Acad. 

 Sci., II., p. 6 ; Amer. Jour. Sci., iii., XXV. 476. 



Lesley, J. P. " The Iron Manufacturer's Guide," 1886. Hist. Rec. 



Newberry, J. S. International Review, November and De- 

 cember, 1874. 



" Genesis of the Ores of Iron," School of Mines Quarterly, 

 November, 1880. Rec. Amer. Jour. Sci., iii., XXI. 80. 



