IMPROVEMENT OF MOUTH OF MISSISSIPPI RIVER. 95 



%york, still this is no comparison to the ^100,000 or ^300,000 re- 

 quired to extend the jetties per annum, provided that science and 

 determination should exist in sufficient abundance to produce the 

 same on the ground which would have to be occupied, and of suffi- 

 cient stability to escape the fate of the jettee of 1857. 



