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use them most, whether for travelling or for transport, get the most benefit. 

 Is not that the case with every improvement] But it is the resvilt of a 

 natural law, that there are other advantages which every man shares in without 

 any effort of his own. So long as a deficiency remains, no man can escape from 

 contribution to it ; but then there are some advantages of which no man can 

 be deprived, and if no great improvement is to be undertaken until the benefits 

 can be as evenly and universally spread as the cost necessarily must be, then 

 perish all efforts to improve ; for impi-ovement, upon su.ch conditions, becomes 

 impossible. 



