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midft of them, pafTages for boats : and, in fome places, 

 the borders confift of lofty woods, with creeks and rivers 

 for the admiffion of veffels, whofe banks are covered with 

 high grafs, reeds, and wild fpreading trees, forming clofe 

 gloomy arbors, under which the vefTels pafs. From thefe 

 arbors are cut many viftoes through the woods, to diftant 

 profpects of towns, bridges, temples, and various other 

 objects, which fucceffively ftrike the eye, and fill the 

 mind with expectation ; when fuddenly a farther progrefs 

 is rendered impracticable, by rocks, ftrong branches, and 

 whole trees lying crofs the channel; between which the 

 river is feen ftill to continue, with many iflands; whereon, 

 and alfo in the water, appear the remains of antient 

 flructures, monumental infcriptions, and fragments of 

 fculpture : which ferve to give an edge to curiofny, and 

 to render the difappointment more affecting. 



Sometimes too, inftead of being intercepted in your 

 paffage, the velTel, together with the whole river, are, 

 by the impetuofity and particular direction of the cur- 

 rent, hurried into dark caverns, overhung with woods ; 



whence, 



