OCCURRENCE OF QUARTZ IN CEYLON. 177 



be more apparent than actual, as the somewhat hackly fracture of 

 this variety cannot so indubitably show signs of work as the glass- 

 clear quartz. 



In the case of the finds at Maskeliya, Bandar a wela, and in certain 

 caves, the material used was often obtained from derived pebbles , 

 which must have been carefully searched for, as pebbles of clear 

 quartz are certainly not common in the neighbouring streams. 



Only a few implements formed of chert have hitherto been found 

 in Ceylon, and as the clear quartz cannot be said to be distributed 

 in great abundance in the localities where the implements have been 

 found, and could then only be obtained in comparatively small 

 unfractured pieces, it is somewhat remarkable that chert was not 

 more widely employed, but still more so that one of the compact 

 siliceous varieties of gneiss, such as the common charnockite rock , 

 was not fashioned to form the larger and ruder tools. 



