372 EXPLANATORY INDEX. 



"We arrived at a smooth open river beyond the Rappu 

 Hapids. The islands in these rapids and a river near by are 

 so called from the existence of a peculiar species of tall and 

 graceful bamboo which nourishes there, not being found 

 further north. Pieces of the stem of this bamboo are dried 

 and used by the Indians as Arrow-heads, which are said to 

 possess similar properties to the far-famed wourali poison. 

 They split up the stem, and dry the pieces over a fire, and 

 then shape them into lance-heads, which they fasten on the 

 ends of Arrows. Wild animals wounded by these Arrows are 

 at once completely paralyzed, and in that condition easily 

 despatched. This bamboo is tall, growing singly, and not in 

 clumps, from a mass of matted roots, like the common 

 bamboo." 



The heads are about six inches in length, and are shaped 

 like willow leaves. 



For the quivers employed for the blow-gun and hog-arrows, 

 see " Quiver." 



ARROW-REED (Gynozcium saccharinum.) It is described on 

 page 369. 



ARROW-ROOT (Maranta arundinacea.} This is a sort of 

 cane, with broad, branching leaves and white flowers. 

 Several species are cultivated for food. 



AWNING, Canvas. Later travellers have proved the value 

 of Waterton's experience. Nothing is so certain to bring on 

 the dreaded fever than the drenching rain which is so common 

 in Guiana, especially when the rain-storm comes on at night. 

 As the average temperature at night rarely varies more than 

 from 73 to 85 Fahr. the traveller can sleep in the open air 

 without inconvenience so far as regards heat and cold. Against 

 rain, however, he must guard, and such a waterproofed canvas 

 awning as Waterton describes is found to answer that purpose 

 admirably. 



