hours before he was found, or not more than four hours after I had seen him, to all appearance, in perfect health! ~Wharf and Landing-place on the Rock.~ No inconsiderable part of the labour of this season was devoted to the clearing of the landing-place, which was formed in a natural creek (see Plate III.) and in excavating the rocks in front of the line of wharf, so as to admit the vessels carrying the building materials to come alongside of it. That work could only be done at certain times of tide and during very fine weather, and was, therefore, tedious as well as hazardous. After two entire days spent in cutting with a sickle, mounted on a long pole, the thick cover of gigantic sea-weed, which hid the true form of the Rock from view, we were able to mark out the line of the wharf; and after all the mines were bored and charged and the tide had risen, and every one had retired from the spot, the whole were fired at the same instant, by means of the galvanic battery, to the great amazement and even terror of some of the native boatmen, who were obviously much puzzled to trace the mysterious links which connected the drawing of a string at the distance of about 100 yards, with a low murmur, like distant thunder, and a sudden commotion of the waters in the landing-place, which boiled up, and then belched forth a dense cloud of smoke; nor was their surprise lessened, when they saw that it had been followed by a large rent in the rock; for so effectually had the simultaneous firing of the mines done its work, that a flat face for a quay had been cleared in a moment, and little remained to be done, to give the appearance of a regular wharf and to fit it for the approach of a stone lighter, except attaching wooden fenders and a trap ladder. ~Ring-bolts, Water-Tanks, and Railways.~