CONTENTS. 



♦ i 



PART i. 



Page 



List of aftershocks of the great Earthquake of 12th June 

 1897, by R. D. OLDHAM, A.R.S.M., F.G.S. . . .1-102 



PART 2. 



Geology of the neighbourhood of Salem, Madras Presidency, 

 with special reference to Leschenault de la Tour's observa- 

 tions, by T. H. HOLLAND, A.R.C.S., F.G.S. 



I. Introduction •«•«•••«• 103 



II. Classification of the rocks — 



1. Fundamental biotite gneisses • • . • 107 — no 



2. Schists of the Salem-Ahtur 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 Earth Movements — 



Strain-slip cleavage ; " trap-shotten " bands ; disloca- 

 tion 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 ..•..••«.. • 148^150 



Annotated translation of extracts ..•••.. 151 — 161 



Index 163—168 



Plates (i — ii) 



PART 3. 



The Sivamalai series of Elaeolite-Syenites and Corun- 

 dum-Syenites in the Coimbatore District, Madras 

 Presidency, by T. H. HOLLAND, A.R.C.S., F.G.S. 



I. Introduction ......... 169 



II. Geological Relations and Origin . . . , 171 



