Annual report of the United States Geological Survey to the Secretary of the Interior . TERNS FROM THE JURASSIC OF OROVILLE, CALIFORNIA LIBRARY. OF THE UNIVERSITY af ILLINOIS. PLATE LIII. P L ATE L I II. rage. Fig. 1. \iopteris californica Font 349 Fig. 2. Ctenis graxdifolia Font 354 Fig. 3. Ctenophyliam grandifolilm Storrsii Font 359 496 LIBRARV OF THE UNIVERSfTVaf TWENTIFTH ANNUAL REPORT PART II PL. Lilt

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Keywords: ., book, bookcentury1800, booksubjectgeology, booksubjectwatersupply