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The significance of the term Sierran. (Am. Geol., vol. 29. pp- 
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Composition of yttrialite, with a criticism of the formula as- 
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Still rivers of western Connecticut. (Bull. G. S. A., vol. 13, pp. 
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JOHNSON, D. W. 
Notes of a geological reconnoissance in eastern Valencia county, 
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Precambrian formations of parts of Warren, Saratoga, Fulton, 
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On Jurassic stratigraphy in southeastern Wyoming, (Bull. Am. 
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Additional Notes on the Cambrian of Cape Breton, with descrip- 
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Report of the director and State Geologist [New York]. 1899. 
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Note on the surface geology of Rio Grande do Sul. (Am. Geol. 
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Emery mines of Westchester county. (53 Ann. Rep. N. Y. State 
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Roofing slates of Washington county. (53 Ann. Rep. N. Y. State 
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Petroleum and natural gas in New York. (53 Ann. Rep. N. Y- 
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