In Sequoyah County there is an interlacing system of shoestring anticlines of unusual length. Production, mainly gas, has been found there in all tests located on anticlines, as at Vian and Muldrow. An analysis of coal 20 feet below the surface, recently made by Gilmore and Company, of Tulsa, shows a fixed carbon ratio of 93.54 per cent.

Two regional peculiarities in Sequoyah County have not, to the writer’s knowledge, been published. First, the base of the Pennsylvanian dips rather steeply to the south from the Tahlequah quadrangle across the region of these folds so that only the drill can...

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