Platr 1.5. 



Ml. 



^^"S&r- 



^m^^^- 



'fW^i'i'-r'' -'^^" 



' i 



[^To face pctye 134. 





,^^^^^i 



' '-i^.^f.- 





CONGLOMERATE BEDS AT THE KAIETEUR PLATEAU, 

 POTARO RIVER. 



Photo bij II. I. I'erkiu 



