34 ON THE REMOVAL OF BARS FROM 
necessity of treating each case according to its own special require- 
ments. To carry out the works proposed by the author at the 
entrance to the Clarence would probably cost about £150,000 to 
£160,000 
coming to the above conclusion as to the best method of 
h 
iffey, Danube, the Kurrachee mouth of the Indus, and the recent 
great works at the mouth of the Mississippi, in all of which 
cases the object kept in view has been the protection of the 
entrance from the wave action, and improving the scour by making 
the entrance channel as straight as possible ; whereas the existing 
works on the Clarence, in his opinion, merely deal with the 
“result” brought about by the disturbing action of the waves and 
tide, instead of treating with the “cause” by protecting the tidal 
action from the disturbing action of the waves, which would be 
the case if the works proposed by the author were carried out. 
The entrance to the Bellinger River is rather a complicated case, 
judging from the country map and the Admiralty chart, and in the 
absence of a detailed chart of the river it would be unwise to 
The entrance to the Macleay River is one that would require 
careful study ; but as it is well protected on the south by Trial 
Bay, and having a large volume of tidal water available for main- 
taining the entrance, there should be no great difficulty in acquiring 
a satisfactory channel across the bar. 
entrance from the north-easterly weather, and at the same time 
Meet sss Nee een en, ea 
fa aah es 
