7 
THE ENTRANCES TO OUR RIVERS. 31 
at the case with the above ip aA before us, it appears 
ca the best point on whic ocus our large available scouring 
power, would be in the eo of A on the plan, as near 
av 
would be necessary in order that the tidal and Scere water scour 
prove the South Channel. Secondly: By the construction of a 
wall from the pilot station in a south-easterly direction, crossing 
the sandbank, and terminating by a breakwater of about the 
works. The northern works would protect the entrance from the 
north-easterly and easterly weather, re as is well-kno own, are 
the principal agents in heaping up bars ; they would, in conjunc- 
tion with the southern breakwater, direct and concentrate the 
d 
water to carry the sand well out to sea. Considering the large 
amount of tidal water available, and the great depth of the sea a 
short distance from the entrance, there can be no doubt that, ina 
short time after the completion of these works, there would ‘be a 
sufficient depth at the a a to enable the largest steamer 
afloat to enter ; moreover, the lower reach of the river being 
protected from the prejudicial action of the waves, and having its 
direction fixed by the position of the entrance, would soon make 
for itself a permanent deep channel. 
Judging from the effect of the pau at Dublin, where an in- 
significant river has been made available for a first-class shipping 
trade, by the correct application of sound principles, the author 
has every confidence in predicting that, if works were carried out 
on the lines proposed, this great natural highway, which is now 
closed to all except small steamers and coasting craft, would be 
which, as far as enhancing the value of property and increasing 
the prosperity of this district, cannot well be ganged, or, in these 
times of advancement, even imagine the maturest con- 
sideration of this case, the author feels pucnnel that, by the ap- 
plication of the most modern and improved construction, these 
works rig be carried out for a sum not exceeding £200,000 or 
£220,00 
‘The cae (plate No. 5) is undoubtedly the most important 
of all the rivers of this Colony running into the Pacific. It flows 
