494 EXPLANATOEY INDEX. 



Waterton not only succeeded in procuring the manufactured 

 poison, but also the whole of the materials of which it is made. 

 Unfortunately, the canoe was capsized in the falls of the 

 Essequibo river, the precious parcel was lost, and there was 

 no second opportunity of replacing it. As to the abandon- 

 ment of the temporary hut after the Wourali has been made, 

 subsequent travellers have said that the hut is not only aban- 

 doned, but burned to the ground, so as not to leave a trace of 

 the mode by which the poison was prepared. 



WREN (Troglodytes eudon). 



Y. 



YAM (Dioscorea alatd). The plant is closely allied to our 

 common Bryony. Several species are cultivated. 



YAWARACIRIS. These pretty little birds are popularly 

 called Blue Creepers, on account of the prevailing hue of the 

 plumage. They belong to the genus Coereba. Waterton's de- 

 scriptions of the two commonest species are admirable. The 

 first of his Yawaraciris is dereba cyanea, and the second, 

 " still lovelier than the first " is Ccereba ccerulea. I regret to 

 say that vast numbers of both birds are killed in order to 

 furnish decorations for ladies' hats. 



