ENGINEERING. 



By WILLIAM II.WAHL, Ph.D., 



Philadelphia, Pa. 



THE JETTY WORKS AT THE SOUTH PASS OF THE 



MISSISSIPPI, 



from all that can be reliably ascertained, do not appear to 

 have effected much, if any, improvement in the condition of 

 the channel, by reason of the work done in 1878, over that of 

 1877. This will appear from the following tabulation of the 

 surveys of the government engineer appointed to inspect the 

 work, and whose reports we present from the 28th of July, 

 1877 when the jetty work was sufficiently advanced to man- 

 ifest a decided improvement in the navigability of the chan- 

 nel to the 13th of July, 1878, since which time no reports 

 have appeared, the epidemic of yellow fever presumably hav- 

 ing forced the temporary suspension of the work. 



REPORTS OF GOVERNMENT ENGINEER CAPT. M. R. BROWN" 



FROM THE JETTIES. 



The jetties have now been completed, and their permanent 

 effects in scourino; a channel will not lono; be a matter of 



