The mode of operation is as follows. The rough breakwater is formed by rubble-stones, brought from the mountain in waggons peculiarly constructed for the express purpose (the design of which, I understand, was furnished by the resident engineer, and proves the versatility of his genius), and dropped perpendicularly through the staging into the sea, and is then left to be dealt with by the sea, which arranges the deposit in a manner best suited to form a consolidated mass; and it is calculated that, when a sufficient portion of the mountain has been dropped into the sea, there will be formed a breakwater which will have an average base of from 400 to 500 feet, and this will gradually slope upwards to about 50 feet on the summit of the breakwater on which the stone pier will be built. But after all the sea is the great workman. We find the materials, and it makes the foundation; or as the celebrated French engineer, Monsieur Cachin, observes, “If man be strong enough to heap together rocks in the midst of the ocean, the action of the sea alone can dispose them in the manner most likely to ensure their stability.” This is now most effectually carried out by this new means of depositing stones. When a heavy sea comes on, it breaks over the ridges of rubble-rocks, which are interspersed amongst the timber of the staging, and gradually lowers them, carrying away ridge after ridge, until that which was far above the water is completely submerged; and the sea acting upon these stones gradually solidifies the mass, which binds itself into the clayey bottom of the harbour, and the whole becomes tenaciously cemented to the ground. And this process will go on until the deposit shall have formed a place sufficiently inclined to sustain the breaking of the sea without removal. The slopes, it is understood, will be faced with dressed stone to a certain extent, similar to the fine specimen of beautiful workmanship, which has been executed for about 100 yards, at the seaward side of “Soldier’s Point.” The present effective staff consists of eight locomotive engines, running on five lines of railway on the breakwater; a fixed engine for grinding, fifty horses, and 1,300 men; and the stores embrace all things requisite for conducting the work in a self-supporting manner. This mass of mind and matter is able every day to accomplish a removal into the sea of 4,000 tons weight of the mountain, and so the work proceeds.