LIST OF FIGURES IN TEXT. 



Page. 



Mouth of the Demerara River at Georgetown, British Guiana 30 



A trench in Georgetown 31 



View of the lowlands looking seaward from the railway near Mahaica 32 



View of the drainage canal at Cane-Grove Corner 33 



Photograph of Carnegiella strigala in aquarium 35 



View on the right bank of the Demerara River 36 



View of creek filled with brush-wood above Wismar at low tide. Indians are poisoning 



the creek 37 



Fish-fence made of reeds and banana-leaves on creek above Wismar. Indian with bow 



and arrow ready to shoot larger fishes brought up by poison 38 



View on bayou back of Christianburg. Indian fishing from his corial 39 



Indian women pounding leaves in a hollow on the ground preparatory to using the 



pulp for poisoning a stream on Gluck Island 40 



Small stream on Gluck Island dammed by Indian women before putting in the poison- 

 ous leaf-pulp 41 



Edge of bayou between right bank of Essequibo and outlying sand-bar at Rockstone . 42 

 Looking across the Rapids of the Potaro River, at Tumatumari. Papaya-trees in 



foreground 44 



Albert, one of the Indian bearers, transporting goods at Kangaruma 46 



View looking up the Potaro River in the early morning. Glimpse of the Guiana 



Plateau in the distance 47 



Seining on a sand-bar below the Amatuk Cataract 48 



View on the Potaro River looking up stream at the point where the first glimpse of 



the Kaieteur Falls is caught 49 



Exposed left side of the bed of the Potaro River at Tukeit in the dry season 50 



Looking up the Potaro Valley from the brink of the Kaieteur Falls 51 



Looking down the Canyon of the Potaro River from the brink of the Kaieteur Falls . 52 

 View looking up the dry bed of Shrimp Creek. Figure of man in middle distance 



shows height of rocky steps 53 



Diagrammatic representation of the contour of the Kaieteur Falls. (After Brown.) . . 56 



Table showing distribution of the fishes taken by C. H. Eigenmann in the Potaro 



River above the Kaieteur Falls 101 



xi 



