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On a Group of Volcanic Rocks from the Tewan Mountains, New Mexico and on the Occurrence of Primary Quartz in Certain Basalts
A report about volcanic rocks from the Tewan Mountains which present a series of transitions from acid rhyolite, through audesite, to quite basic basalt.
The Relations of the Traps of the Newark System in the New Jersey Region
From introduction: This contribution is a summary of the more complete results of a systematic study of the relations of the traps of the Newark system in New Jersey and New York
Results of a Biological Survey of the San Francisco Mountain Region and Desert of the Little Colorado, Arizona
Brief summary of a biological survey of the Painted Desert, specifically the San Francisco Mountain region, and the Grand Canyon (Cañon).
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