28a. Clark, M., and Lewis, W. History of expedition under the command of 

 Lewis and Clark to the sources of the Missouri, thence across the 

 Rocky Mountains and down the Columbia, performed during the years 

 1804-6, by order of the government of the United States. Vol. 1, 28, 

 470 pages, maps. Vol. 2, 9, 522 pages, map. Paul Allen, Philadelphia, 

 1814. 



29. Coal Area and Statistics of Oregon. Publications of the U. S. G. S. 



Ann. 2, p. 28; M. R., 1882 (publ. 1883), pp. 94-5; M. R., 1883-4, pp. 12, 

 66; M. R., 1885. pp. 11, 45; M. R., 1886, pp. 225, 230, 294-5; 

 M. R., 1887, pp. 169, 288-90; M. R., 1888. pp. 147, 240-1; M. R., 1891, 

 pp. 180, 287. 



29a. Coleman, E. T. Glaciers in Oregon and Washington. Alpine Jour., p. 

 23.3, 1877. 



29b. Collier, Arthur J. "The Two Islands." Univ. of Ore. Monthly, Vol. 8, 

 No. 2, pp. 48-50, Nov., 1902. 



A review of Professor Condon's book. 



29c. A future coal supply for Portland. Univ. of Ore. Monthly, Vol. 15, 



pp. 79-83, 1911. 



30. Condon, Thomas. The Willamette Sound. The Overland Monthly, Vol. 



7, pp. 408-73, 1871. 



A chapter from Two Islands. 



31. — — On some points connected with the Igneous Eruptions along the 

 '. . Cascade Mountains of Oregon. Am. Jour. Sci., 3d ser., Vol. 18, pp. 



406-8, 1879. 



A letter to J. D. Dana in reply to an inquiry respecting the con- 

 tinuity of the lavas of Mt. Hood and the Cascade Mountains with those 

 of Mt. Adams and Mt. St. Helens, and relating to other points on the 

 eruptions southward along the Cascade Range. Mentions Pliocene 

 deposits of Yakima Valley. Compares Cascade Range from Klamath 

 river north to the Columbia to a fallen tree with limbs broken and 

 decayed. Proves that the branch mountains were throwTi out from 

 the main ridge when it stood at a higher elevation than present range. 

 Relates forming branches to the close of the Miocene Tertiary. 



32. Preliminary Report of the State Geologist to the Legislative 



Assembly. Eighth regular session, 1874. Salem, 1874, 1880, 22 pp. 



33. The Astoria Shales. American Naturalist, Vol. 14, 1880, p. 4.57. 



34. The Two Islands and What Came of Them. Portl.and. Oregon 



1902. 



36. A New Fossil Pinniped (Desmatophoea Oregonensis). From the 



Miocene of the Oregon coast. Univ. of Ore. Bull. Sup. to Vol. 3, No. 

 3, May, 1906. 



35a. Oregon Geology. Portland, Oregon, 1910. 



36. Conrad, T. A. Fossil Shells from Tertiary Deposits on the Columbia 



River near Astoria. (Miocene species collected by J. K. Townsend.) 

 Am. Jour. Sci., 2d ser.. Vol. 5, pp. 432-3, 14 figs., 1848. 



Names and describes briefly the fossils from the Astoria shales, 

 with figures. 



37. Am. Jour. Conch., Vol. 1, 1865, p. 150. See also Proc. Acad. Nat. 



Sci., Philadelphia, for 1865, p. 71. 



38. Catalogue of the older Eocene Shells of Oregon. Am. Jour. Conch.« 



Vol. 1, pp. 150-4, 1865. 



The fossils are really Oligocene and Miocene. 



