ILLUSTRATIONS, 



Page. 

 g. 1. — Distribution of the varieties of gneiss . ' . . . . . 1 



, 2. — Section from near Sitarampuram to Pamur, 24 miles . . . . 14 



, 3. — Well-section south of Mangamur . . , . . .58 



, 4. — Diagram-section across Vemavaram Ridge ..... 62 



, 5. — Ideal-section from Budavada to Pavulur 69 



Portrait of sloping surface of trap dyke 166 



