ENTRANCE JETTIES. 161 



front row of piles is finished with open planking on the inside, 

 to prevent the deposit of bulky matter on the slope. 



Royal Albert Dock. Figs. 142 to 144 show the timber-work 

 jetties forming the bell-mouth entrance to the Royal Albert 

 'Dock. The curved part is open timber- work, but the triangular 

 part to which it is attached is filled in solid. 1 



1 Engineer, vol. 1. pp. 6, 10. 



