12 



102. Educational Series of Rock Specimens. Bull. 50, U. S. G. S., 1898, 



p. 74, No. 12, pebbly sandstone, Ashland; p. 297, No. 114, saxonite 

 ffom near Riddles. 



See Bull. 60, pp. 20-6. 



Also Von Foullon. 



Also Austen, 

 p. 385, No. 151, spheriodal weathering, Roseburg. (Diabase, prob- 

 ably Eocene.) 



103. The Roseburg Folio. U. S. G. S., Geologic Atlas of the U. S., 



Folio No. 49, 1898. 



Describes minutely what is meant by the Klamath Mountains, 

 topography, relief, geology and economic geology of Roseburg Quad- 

 rangle. 



104. — The Bohemia Mining Region of Western Oregon. 20th annual 



report, U. S. G. S., Part 3, pp. 7-37, 1898-9. 



The history, output, location and topography. Geology, mines 

 and prospects. Also notes on Blue river mining region and notes on 

 the structure of the Cascade Range, with special reference to the 

 localities of fossil plants described by Knowlton, p.p. 37-51. 



See Knowlton. 



105. The Coos Bay Folio. U. S. G. S., Geol. Atlas of the U. S.. Folio 



No. 73, 1901. 



Boundary, topography, geology and economic geology of the 

 Quadrangle. 



106. Topographical Development of the Klamath Mountains. Bull. 



U. S. G. S. No. 196, pp. 9-63, 1902. 



Describes formation of Klamath Mountains, elevated beaches, 

 marine deposits of and earlier valleys of Southern Oregon rivers. 



107. Klamath Mountain Section of California. Am. Jour. Sci., 4th ser.. 



Vol. 15, pp. 342-62, May, 1903. 



108. The Port Orford Folio. U. S. G. S. Geologic Atlas of the U. S., 



Folio No. 89, 1903. 



Boundaries, general and economic geology of the Quadrangle. 



109. So-called Iron Ore near Portland, Oregon, pp. 343-7, Bull. U. S. 



G. S., No. 260, 1904. 



110. The Composition and Structure of the Klamath Mountains. 



Abstract; Science, new ser.. Vol. 19, p. 794, 1904. 



Describes briefly the above paper as read before the Geological 

 Society of Washington. 



111. Age of the Pre-Volcanic Auriferous Gravels in California. Wash. 



Acad. Sci. Proc, Vol. 8, pp. 405-6, 1907. 



Discusses the age of the auriferous gravels of the Sierra Nevada 

 in California in the light of evidence offered by fossil plants and marine 

 shells occurring in Oregon. 



112. Asbestos; Mineral Resources of the United States, 1907. 



113. The Mesozoic Sediments of Southwestern Oregon. Am. Jour. Sci., 



4th ser.. Vol. 23, pp. 401-21, 1 fig., .June, 1907. 



114. Local silicification of the Kno.wille. Abstract; Science, new ser., 



Vol. 27, p. 411, March 13; 1908. 



115. StrataContaining the Jurassic Flora of Oregon. Abstract; Science, 



new ser., \'ol. 27, pi). 410-1, March 13, 1908. 



