RATE OF EROSION OF THE SEA-COASTS OF ENGLAND AND WALES. 433 
. I did not meet with any papers or maps except those of the Office of Woods and 
Forests, which were returned with an Act of Parliament. There was an 
arbitration held, which also condemned the wooden sluices which I referred 
pt to, and the tunnel and sluices were adopted. 
19. This is but a small case, but is extremely important to those locally concerned ; 
and shows also the cause of so large an accumulation in that part of the coast. 
I know of no other like it. 
x 
® 
Ps 
1l. Worthing to Lancing. 
By RicHARD B. GRANTHAM, F.G.S., M.Inst.C.E., Inspector under the 
Land Commissioners. 
1. Part of the south coast, between Worthing and Shops Dam, Lancing. 
2. The coast consists of a wide shingle beach. 
3. The coast-line curves inwards towards the north-east between the points above 
referred to. 
4. The prevailing wind is from the south-west. 
5. South-west. 
_ 6. The mean set of the tides is H. by N. along the line of coast, but in Mid Channel 
4 it is east and west. 
7. The range of the tides is :—Springs, 14 feet ; neaps, 10 feet. 
9. a. The mean breadth is 40 feet. ec. Eastwards. d. The maximum size of the 
____ pebbles is about 6 inches diameter. e. The front of the beach consists of 
two slopes. That from low water upwards is nearly flat, and towards the 
&£ upper or crown rises steep from 2 to 1 and 3 to 1. 
20. The shingle is accumulating, as will be described when referring to groynes. 
41. It is not diminishing in height or breadth. 
22. Groynes were commenced in 1873, and have to the present time been the means 
___ of arresting and accumulating shingle. They differ from the ordinary groynes, 
being of great length from the top of the shingle beach to beyond low water, 
probably 200 feet in length, and were placed 500 feet apart, forming an angle 
varying from 80 deg. to 63 deg., with the coast-line. They are fifteen in 
number, and are built of fir piles and planking, and supported by land ties. 
Tn places where the shore-line was not quite straight with the main line the 
beach was hollowed out, and intermediate groynes were placed which stopped 
____ the beach; these were of less length and height than the main groynes. 
23. It is not removed artificially, as it is private property, from any part of the front 
line of the beach, but probably is taken for repair of roads at the back of the 
5 bank. d. There were no half-tide reefs formed anywhere in the distance 
____above referred to as natural breakwaters. 
14. The coast-line is not worn back by the sea, as the beach, as now protected by 
groynes, completely prevents such action, except just east of Worthing, 
where there was a shingle bank, and groynes were erected in a bend of the 
land, but the bank was swept away and the piles of the groynes were taken 
up, and near that spot the public road was cut through, and the sea flooded 
the land inside. The road led from Worthing to Lancing about three years 
since, but has not been reinstated. The piling and groynes at Worthing town 
are in a very bad state, and the shore requires quite a different kind of pro- 
tection. 
15. ecrely caused by the power of the sea near Worthing, by the abstraction of 
shingle. 
” 
Aaa 
12. Lancing to Shoreham. 
By RICHARD B. GRANTHAM, F.G.S., M.Inst.0.E. 
4. Thave become acquainted with the coast from near the Coastguard Station, which 
is on the beach opposite Shoreham, in Sussex, by being employed by the Land 
Commissioners to report on the erection of sea-groynes from there to Shops 
Dam, near Lancing, on the beach westwards, of which there are fifteen. 
1885. FF 
