. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. AMERICAN GEOLOGY DECADE OF 1860-1869. 527 In 1866, G. C. Swallow, who succeeded B. F. Mudge as State geologist, issued a Preliminary Report of the Geological Survey of Kansas, in form of an octavo volume of 198 pages, including a report by Dr. Tiffin Sinks on the Climatology, and one by Swallow's . Geological Survey Dr. C. A. Logan on the Sanitary relations of the State. of Kansas, 1866. „ TT . Ma], r. Hawn was assistant geologist. Special


. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. AMERICAN GEOLOGY DECADE OF 1860-1869. 527 In 1866, G. C. Swallow, who succeeded B. F. Mudge as State geologist, issued a Preliminary Report of the Geological Survey of Kansas, in form of an octavo volume of 198 pages, including a report by Dr. Tiffin Sinks on the Climatology, and one by Swallow's . Geological Survey Dr. C. A. Logan on the Sanitary relations of the State. of Kansas, 1866. „ TT . Ma], r. Hawn was assistant geologist. Special attention was given to the eastern and central part of the State. He found rocks belonging to Quaternary, Tertiary, Creta- ceous, Triassic (?), Permian, Lower Permian, and Carboniferous for- mations, the lowermost division being the Lower Carboniferous. The buff, mottled, and red sandstones underlying the Cretaceous were doubtfully referred to the Triassic from their resemblance to the foreign Triassic and the presence of a Nueula resembling the Speciosa of Munster from the Muschelkalk of Bindlock. The presence of Permian beds, it will be remembered, he had previously announced. The coal-bearing rocks he estimated at 2,000 feet in thickness and underlying an area of over 17,000 square miles. In these he announced twenty-two distinct and separate beds of coal, ranging in thickness from 1 to 7 feet. This work of Swallow in Kansas has been largely overlooked by recent workers. Ac- cording to Keyes," a large portion of it was not only good but marvelously well done for its day and the conditions under which it Avas accomplished. The historical importance of Swallow's work "lies in the fact that some of his geographic names applied to geologic terranes will have to stand as valid terms, al- though his correlations were often veiy ; Swallow, like Mudge, was born in Maine, but was of Norman-French descent. He studied the natural sciences under Parker Cleaveland, a


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