Index to the Plates, 



Plate Vila. — Shows the right hand edge. 



Plates IX and IXa. — Well shaped oval Implement with cutting edge 

 -all round (Class lib.) slightly pointed at one end. This Implement 

 which shows an unusual amount of care to have been bestowed on its 

 manufacture was also found at the Atrumpakkam nullah section. 



It is made of greyish brown stone with fine greyish bandings. 



The ri^ht hand edge is shown iu Plate IXa. The color is only ex- 

 ternal, for a slight chip shows the interior to be of grey color— which has 

 thus been weathered brown. 



Plates X and Xa. — Small oval Implement from the lateritic gravel at 

 Palaveram— broken at one end. 



The cutting edge very sharp and well chipped. The quartzite is ex- 

 ternally weathered — a light, cinnamon color — but the freshly broken end 

 exhibits a pale dirty-pink. Plate Xa shows the left hand edge. 



Plates XI and Xla- — A hatchet head Implement from the Atrumpak- 

 kam nullah, found a few yards away from the foregoing one in a freshly 

 formed rain gully. 



This Implement shows much calcareous incrustation. Plate Xla is a 

 side view. 



Plates XII and Xlla. — Fine axe or wedge-shaped Implement. (Class 

 lb.) found in situ in the side of the Kalingula gully, tributary to the 

 Atrumpakkam nullah (see ante page). 



The main part of the Implement which consists of light grey stone is 

 very little weathered, but the base has assumed by bleaching a saccharoid 

 appearance. A few pellets of laterite adhere strongly by a calcareous 

 cement to the figured side of this axe head. The edge view given in 

 Plate XI la is that of the right hand edge. 



Plates XIII and Xllla. — A flake knife or spear-head from the Atrum- 

 pakkam nullah of compact purple quartzite. 



The right hand exceedingly sharp edge is shown in Plate Xllla. 



Plate XIV. — Sling stone? An Implement of rudely discoid shape from 

 the Atrumpakkam nullah of greenish grey quartzite."* 



Plate XV— Plake knife? from the Atrumpakkam nullah— of very fine 

 grained light greyish brown quartzite. 



* Front and side views of arrow head( ?) From the high lying lateritic conglome- 

 rate at Cimjalum ; the Quartzite is of a smokey grey colour. 



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