CHINCHA ISLANDS. 



171 



the smallness of the excavations, which at some distance are 

 hardly perceptible, to convince himself of the inexhaustible 

 supply. Some huts have been constructed on the island, where, 

 in the midst of ammoniacal effluvia, some Peruvian custom- 

 house officers and soldiers superintend the working of the 

 guano-mines." 



Birds of Passage 



