CONTENTS. 



I. Introduction — Page, 

 II. Classification of the rocks — 



/. Fundamental biotite gneisses ...... 107 — no 



2. Schists of the Salem-A.htur valley ; Iron-ore beds . . no — 116 



3. The Pyroxene-granulites, or charnockite series • . . 116 — 129 



4. younger igneous intrusions. Basic dykes; magnesian series 



of the Chalk Hills ; " White Elephant " quartz rocks . 129 — 138 



III. Evidences of local movements — 



Strain-slip cleavage ; " trap-shotten " bands ; dislocation of 



dykes .......... 139 — 143 



IV. Summary of Results 144 — 147 



APPENDIX. 

 Geological observations made by Leschenault de la Tour during 



his travels in Southern India (1816 — 20) ... . . 148 — 161 



Introduction— , 



Annotated translation of extracts — 

 Index — 



