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ones, are generally from forty to fifty feet; the fpread- 

 ing branches of the trees forming over them a natural 

 umbrella, under which the travellers pafs, at all times 

 of the day, unmolefted by the fun. 



In fome places thefe roads are carried, by lofty vaulted 

 paffages, through the rocks and mountains; in others, 

 upon caufeways and bridges, over lakes, torrents, and 

 arms of the fea ; and in others, they are fupported, be- 

 tween the precipices, upon chains of iron, or upon 

 pillars, and many tire of arcades, over villages, pagodas, 

 and cities: in fliort, no difficulty has been attended to 

 in their conftru&ion ; but every obftacle has been con- 

 quered with amazing induftry, and at an almoft incredible 

 expence. 



There are, in different parts of China, many works 

 of the kinds juft mentioned ; but amongft the mod con- 

 siderable, are counted the PaiTage of King-tong, the 

 Bridges of Fo-cheu and Lo-yang, and the Cientao, in the 

 province of Xenfi. B 



O The 



