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it every day for three or four hours at a time without ill effects. 
No dredging was attempted, beyond what could be done from a 
boat with a long-handled rake. The brisk almost constant trade- 
winds keep the. surface of the sea considerably agitated a large 
part of the time, and the water in general is not so delightfully 
clear as in Bermuda and about the Florida Keys. 
From San Juan, I went by boat to Aguadilla on the western 
coast. The rocky shore extending northward from this town to 
Fic. 19. A coralline seaweed (Amphiroa Tribulus) from Guanica. 
Point Borinquen, the northwestern corner of the island, and be- 
yond, made a good collecting ground and eight days were spent 
in this vicinity. The marine flora here closely resembles that of 
the San Juan region, though less diversified. One day was de- 
voted to collecting about Rincén and Point Jiguero, the western- 
most part of the island. 
My next stopping-place was at Ponce on the south coast, which 
was reached by steamer from Aguadilla. Only three or four days 
were spent at Ponce, as the immediate vicinity did not seem es- 
