In the open sea, above a league from the town, and within half a mile west of a rock called _L’isle Pelée_, a pier is begun, with design of conducting it on to the shore somewhat beyond _Point Hommet_, about two miles westward of Cherburgh. In order to this, a strong frame of timber-work, of the shape of a truncated cone, having been constructed on the beach, was buoyed out, and sunk in a depth of water; which at lowest ebb is 35 feet, and where the tide rises near 20 feet. The diameter of this cone at bottom is about 60 yards, its height 70 feet; and the area on its top large enough to receive a battery of cannon, with which it is hereafter to be fortified. Its solid contents are 2500 French toises; which, in our measure (allowing the French foot to be to the English as 144 to 135), will amount to 24,250 cubic yards nearly. Several other cones, of equal dimensions, are sunk at convenient distances from each other, forming the line of the pier: their number, when complete, it is said, will be forty. As soon as any one of these is carried to its place, it is filled with stones, which are dug from mount _Rouille_ and other rocks near the coast, and brought on horses to the shore: whence they are conveyed to the cones in vessels of forty, sixty, or eighty tons burden. In like manner, but with much greater labour and expense, the spaces between the cones are filled up with stones thrown loosely into the sea, till the heap is raised above the water. On this mass, as on a foundation, a wall of masonry-work is to be erected. The length of the whole is near five miles. On _L’isle Pelée_ and _Point Hommet_ before-mentioned large fortifications are constructed bomb-proof, to defend the haven and pier. It is the opinion of some persons that this stupendous mole may be injured or destroyed by what is called a ground-sea, _i. e._ a sea when the waters are agitated to the bottom: and this happens when a strong wind, after having put the waves in motion, suddenly shifts to the opposite quarter. The description given in the Poem of this vast undertaking closes with an allusion to this opinion. Note 7, page 23, lines 5 and 6. _Less and less hazardous emprize achieved_ _Resistless Alexander._ Quint. Curt. lib. 4, cap. 2, 3. Note 8, page 23, line 10. _Nor aught so bold, so vast, so wonderful._ ——creditur olim Velificatus Athos— Densa cadavera prora. JUV. Sat. x. v. 173. 186. Note 9, page 24, line 2. _Nor yet that elder work._ ——τειχος εδειμαν,—— ——αμαλδυνηται Αχαιων. HOM. IL. vii. v. 436. 463. Ὡσ ὁ μεν εν κλισιησι,— ——καλλιροον ὑδωρ. IL. xii. v. 1, 33. Note 10, page 25, line 3. _Thee, Burton, and thy lofty cliff._