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POPULAR SCIENCE MONTHLY. 



river, two hundred and fifty miles above Bolivar, is the smaller 

 town of Caicara, which is also an important trading station. 

 Here manufactured goods are exchanged for the products of the 

 forests and plains. Mr. Frank Vincent thus picturesquely de- 

 scribes the voyage up the great river : 



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"On leaving Port-of-Spain we headed at once toward the 

 southwest and the Serpent's Mouth, out of which we safely 

 passed and entered that branch, or rather that one of the many 

 great mouths of the Orinoco styled the Macareo River, which was 

 at first about half a mile in width, its shores densely covered with 

 aquatic plants and forests. Running nearly parallel to this river 



