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Beyschlag, Krusch, and Vogt: Die Lagerstatten, etcetera, volume I, 

 1910, page 349. 



English translation by S. J. Truscott, volume 1, 1914, page 352. 



26. C. K. Leith and E. C. Harder: Iron ores of the Iron Springs District, 



southern Utah. Bulletin of the United States Geological Survey, 

 number 338, 1908, page 77. 



27. V. M. Goldschmidt: Die Koiitaktmetamorphose in Kristianiagebiet, 1911, 



page 269, for specularite; page 250, for zincblende. 



28. J. F. Kemp : On the formation of garnet zones at the contacts of eruptive 



rocks and limestones. Mining and Scientific Press, March 24, 1906. 



"Contact deposits," in the volume "Types of Ore Deposits," pages 190-201. 

 San Francisco, 1911. 



Notes on garnet zones on the contact of intrusive rocks and limestones. 

 Journal of the Canada Mining Institute, volume 15, 1912, pages 171- 

 186. Twenty-six analyses of garnets from contact zones and eleven 

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29. C. A. Stewart : The geology and ore deposits of the Silverbell Mining 



District, Arizona. Transactions of the American Institute of Mining 

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29a. See final reference under number 28. 



30. J. H. L. Yogt : A series of papers in volume I of the Zeitschrift fur prak- 



tische Geologie, 1893. 



31. J. F. Kemp : The role of the igneous rocks in the formation of veins. 



Transactions of the American Institute of Mining Engineers, volume 

 31, 1901, pages 169-198, especially pages 1S4-195 ; compare, also, vol- 

 ume 33, 1902, pages 699-714. 



32. Achille Delesse : Bulletin de la Societe Geologique, France, second sec- 



tion, volume 19, 1861-62, page 64, as cited by Chamberlin and Salis- 

 bury. See 38, below. 



33. C. S. Slichter: Motions of underground waters. Water-supply and Irri- 



gation Papers, United States Geological Survey, number 67, 1902, page 

 14. 



34. Chamberlin and Salisbury: Geology, volume I, 1903, pages 209-210; 



page 221 of second edition, 1909. 



35. C. R. Van Hise : Treatise on metamorphism. United States Geological 



Survey, Monograph, number 47, 1904, pages 128-129, 570-571. 



35a. M. L. Fuller : Amount of free water in the earth's crust. Water-supply 

 and Irrigation Papers, United States Geological Survey, number 160, 

 pages 59-60 and 72. 



