ECONOMIC -553 



"553 1 Phillips, J. A. Treatise on ore deposits. Ed. H. Louis. 



Lond. 1896. 



553 1 (?) Kemp, J. F. Ore deposits of the United States and 



Canada. N. York 1903. 



*553 2 Thorpe, T. E. Coal, its history and uses. By Profs. 



Green, Miall, Thorpe, Eiicker and Marshall. Ed. 



Prof. Thorpe. Lond. 1878. 



5532(41) Dron, R. W. Coal-fields of Scotland. Lond. 1902. 



'5535 Merrill, Q. P. Stones for building and decoration. 



N. York 1903. 



'553 8 Church, A. H. Precious stones. Lond. 1925. 



5538 Streeter, E. W. Precious stones and gems. 



Lond. 1898. 



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