﻿NO. I 



SMITHSONIAN EXPLORATIONS, I925 



49 



Fig. 51. — Mangrove marshes north of Recife. The coast of Pernambuco 

 is built up by coral reefs and mangroves. In the distance are seen the ruins 

 of an old fort and lighthouse. 



Fig. 52. — Part of Paulo Alifonso Falls. These falls are so broken that 

 they form a stupendous cascade. There is no one point from which the entire 

 falls can be seen. The canyon walls are devoid of vegetation except in a few 

 spots watered by the spray. 



