The site of the building having already been carefully traced out with the pick-axe, the artificers, this day, commenced the excavation of the rock, for the foundation or first course of the light-house. Four men only were employed at this work, while twelve continued at the site of the Beacon-house, at which every possible opportunity was embraced, till this essential part of the operations should be completed. After having been two hours upon the rock this tide, the water began to rise upon the smith’s forge and the site of the Beacon-house, and at ¼ past 6 o’clock P. M. the artificers left the rock. [Sidenote: Monday, 31st.] [Sidenote: Longest day’s work hitherto had on the Bell Rock.] The winds varied to-day from N.NE. to S. Though it blew pretty fresh, it was not accompanied with any swell in the sea, and the weather upon the whole was very pleasant. At half-past 3 in the morning, the writer was called by the landing-master, to consult about the state of the weather, and the practicability of landing upon the rock. After some hesitation, the result was to proceed: the signal bell for getting the boats ready was rung at 4 A. M., when all hands took to their respective boats, and at half-past 4 the work commenced at the rock: it continued till half-past 7, allowing an excellent tide’s work of three hours, when the artificers again returned to the floating-light, and remained till the evening tide. At 4 P. M. they landed, but did not begin to work till a quarter from 5 o’clock, when the water had sufficiently left the rock. At a quarter past 7 it was overflowed, when the boats returned to the ship, and the writer was not a little elated, as the morning and evening tide had afforded no less than five and a half hours work, being the greatest day’s work hitherto obtained on the Bell Rock. [Sidenote: September, Tuesday, 1st.] The weather was extremely pleasant throughout these twenty-four hours, though the wind veered and shifted about from N.W. to W.SW. At 4 o’clock this morning the bell made rather an unwelcome call, but all hands readily turned out. As before mentioned, when the work commenced at these early hours, a dram and a biscuit were served out to the artificers; and the writer, upon these occasions, found a cup of coffee very salutary. Having landed at a quarter from 5, the work was continued for three and a half hours, four men, as before noticed, being employed on the site of the Light-house, and twelve at the Beacon-house. The water overflowed the rock at a quarter past 7, when the boats returned to the floating-light. [Sidenote: Smeaton brings off the experimental cargo of stone.]