CONTENTS. 



Page, 



etter of transrnittal to Mr. Arnold Hague, by the author v 



Letter of transmittal to the Director, by Mr. Arnold Hague vii 



Preface ix 



Summary of results 1 



Fossils of the Cambrian 11 



Observations ou Olentllus Howelli 32 



Fossils of the Lower Silurian 65 



Fossils of the Devonian 99 



Fossils of the Carboniferous 212 



Systematic list of species 268 



Paleozoic section in Central Nevada 283 



Index 286 



xi 



