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Left for Lyons on 10:05 train, went to Burlington Hotel , changed clothes and worked north on foot along a syncline , then to the east over an anticline. Many piñon jays along syncline. After dinner started up S. fork of St. Vrain on horseback, horse from Cantwell’s . On contact of Fountain with granite several chestnut backed bluebirds . Very hard work on high, steep ridges. Mapped about 12 square miles today. Reached hotel at 6 p.m., very tired. Several buzzards and sparrow hawks seen.
Lyons , Oct. 2, 1908
Started for Rattlesnake Park on horseback at 7 a.m. At Little Thompson Fountain rests on gneiss and all through the region up creek gneiss is interstratified with granite, though south-