. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. AMERICAN GEOLOGY DECADE OF 1850-1859. 457 The first report, known under the title of Geological Reconnaissance of Tennessee, was presented to the general assembly in 1855, and pub- lished in 1856. It was given up largely to a somewhat popular treatise on the economic geology of the State, with much interesting stratigraph- ical matter. He discussed the occurrence of the ores of iron, copper, lead, zinc, and even gold and silver, and include
. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. AMERICAN GEOLOGY DECADE OF 1850-1859. 457 The first report, known under the title of Geological Reconnaissance of Tennessee, was presented to the general assembly in 1855, and pub- lished in 1856. It was given up largely to a somewhat popular treatise on the economic geology of the State, with much interesting stratigraph- ical matter. He discussed the occurrence of the ores of iron, copper, lead, zinc, and even gold and silver, and included also a brief chapter on Alu- minum or the Metal from Clay. "Stone coal'" and the marbles received a share of attention, as well as various minor minerals. From a strictly geological standpoint the matter given in chapters 5 and 6— the closing chapters of the report—was of greatest importance. Here he dwelt on the general geological structure of the State and gave the now well-known Cumberland section, reproduced with the original legend in tig. 61, and also an ideal cross section illustrating the geolog- ical structure of East Tennessee. He pointed out the striking paral- lelism of the valleys and ridges and the occasional vertical position of the beds, as well as the frequent repetition of the same series of beds, due to folding1 and faulting. N. Fig. 61.—Section from the Cumberland, 8 miles north of Jasper, to the Eastern base of Lookout Mountain. I After James M. Safford.) (Length of section, 20 miles: vertical scale, about five thousand feet to the inch.) A and C, High edges, respectively, of the Cumberland and Walden's ridge, overlooking Sequatchee Valley, represented by the depression between. D, Narrow valley of the Tennessee River; the section crosses a few miles above Kelly's Ferry. E, Portion of the Walden's ridge and Raccoon range cut off by the river, etc. L, Lookout Mountain. Depression between E and L, Valley of Lookout Creek. The unbroken li
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