I 



i 



Papers connected with the construction [No. 31 



840 



do. 



do. 



18 



900 



do. 



do. 



20 



1020 



do. 



do. 



21 



1080 



do. 



do. 



23 



1200 



do. 



do. 



25 



do. >-hard sand, 

 do. 



If 



The last sounding was parallel with the Breakwater Buoy. 



3. The inner soundings, indicate loose sand gradually increasing to a 

 firm bottom of hard sand, without and beyond 900 feet, the sand is of a 

 greyish color. In the open roadstead there are several patches of clay, in 

 some parts mud, whilst in others sand prevails. 



4. The surf broke at 350 feet from the coping stone on the 14th of 

 October 1844, when the last survey was made, and then the weather was 

 moderate. 



5 About 500 feet from the road bulwark or barrier, and 400 feet 

 from the inner wash of the surf, is a ledge of sand, and just outside this 

 bank the depth increases from 10 to 15 feet, but within and without this 

 ridge of sand, and excepting that sudden change, the soundings are very 

 regular ; this bank doubtless causes the break of the outer surf in rough 

 weather. 



6. The declivity of the beach is one foot in every nine, as determined 

 by a levelling instrument. 



7. The shifting of the sand within the bank is so irregular and uncer- 

 tain, that in my opinion "it cannot be defined, though at the same time 

 it does not shift to any depth, and would not affect the stability of piles 

 well driven in. 



8. The rise and fall or the sea may be estimated at 2 feet 2 inches 

 during the neaps, and 2 feet 10 inches at the full and change of the Moon, 

 but during a heavy gale, from the eastward, the sea has risen, to up- 

 wards of 6 feet, and in violent hurricanes, such as that experienced on 

 the 10th of December 1807, when I myself, was on the oeach through- 

 out its extreme violence, the sea certainly rose above the beach road-way 

 which was wholly washed away, and I have no doubt that during that 

 tremendous storm, the sea rose at least 10 feet. 



9. I am of opinion that the surf in ordinary weather does not rise 

 above three feet, in rough weather about six, and during a gale when 

 the whole of the road-stead presents one continued shew of breakers, the 

 inner tier of breakers or surf may rise as high as 12 or 14 feet. 



