CONTENTS. 
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PAGE 
Introduction .......... i 
Chapter I. — Previous accounts of the Geology of Spiti ... 5 
„ II. — Cambrian System. ....... 8 
„ III. — Silurian System . . . . . . . . 20 
„ IV. — Devonian (?), Carboniferous, and Permian • • • 33 
„ v.— Mesozoic Group ........ 60 
„ VI. — Rupshu ......... 92 
„ VII. — Igneous rocks 97 
„ VIII. — Economic Geology ....... loi 
„ IX.— Correlation with the Simla Series 103 
