42 TlMEHRI, 



NO. DESCRIPTION. LOCALITY. 



34-35 Sandstone ... ... Curibiru cataract, Essequebo 



river. 

 36-42 „ ... ••• Near Karakanang, Pacaraima 



mountains. 

 43-44 ,, ... ... Peepee river, „ 



45 ,, ... ... North of Cumararing moun- 



tains. 

 46-47 ,, ... ... Itababo island, Essequebo 



river. 

 48-49 ,, ... ... Below Marlissa rapid, Berbice 



river. 



50 „ ... ... Mouth of Rewa river. 



51 „ ... ... Ekilebah* valley, Ireng river. 



52-53 „ ... ... Arnick valley, Upper Potaro 



river. 



54 i) ... ... Taiepong savannah. 



55 5> ••• ■•• Takutu rapid, Siparuni river. 



56 „ ... ... Kaieteur fall, Potaro river. 



57 >> ••• ... Aruwai fall, Mazaruni river. 

 58-59 >» ••■ ••• Maccari mountain, Essequebo 



river. 

 60 „ ... ... Cabalebo mouth, Corentyne 



river. 

 61-62 „ ... ... Itabru mountain, Berbice river. 



63-64 »> ... ... Base of Twasinki mountain, 



Essequebo river. 

 65-66 „ ... ... Amailah fall, Curiebrong 



river. 

 67-68 „ ... ... Below Akalikatabo island, Cor. 



entyne river. 

 69-70 >• ••• ... At Akalikatabo island, Cor- 



rentyne river. 



71 1. altered by contact 



with greenstone ... Woosouter cataraft, Upper 



Mazaruni river. 



7 2 >» ... ... Head of Mazaruni river. 



73 Sandstone exhibiting filled 



up sun cracks ... Amailah fall, Curiebrong river. 



