Next morning, being the 4th, I moored the ship, head and stern, close to the north shore, at the head of the harbour; hauled up the cables on deck; and opened one of the ballast-ports. From this a slight stage was made to the land, being at the distance of about twenty feet, with a view to get clear of some of the rats that continued to infest us. The Discovery moored alongside the south shore for the same purpose. While this work was going forward, I returned Oreo’s visit. The present I made him, on the occasion, consisted of a linen gown, a shirt, a red-feathered cap from Tongataboo, and other things of less value. I then brought him, and some of his friends, on board to dinner. On the 6th, we set up the observatories, and got the necessary instruments on shore. The two following days, we observed the sun’s azimuths, both on board and ashore, with all the compasses, in order to find the variation; and in the night of the latter, we observed an occultation of ς _Capricorni_, by the moon’s dark limb. Mr. Bayly and I agreed in fixing the time of its happening at six minutes and fifty-four seconds and a half past ten o’clock. Mr. King made it half a second sooner. Mr. Bayly observed with the achromatic telescope belonging to the Board of Longitude; Mr. King, with the reflector belonging to the board; and I made use of my own reflector, of eighteen inches. There was also an immersion of π _Capricorni_ behind the moon’s dark limb, some time before; but it was observed by Mr. Bayly alone. I attempted to trace it, with a small achromatic; but found its magnifying power not sufficient.