I beg leave to lay before the meeting an extract from the private journal of Lieutenant Henry Dawson, a very intelligent officer of the Royal Navy, at present employed on civil duties with the Indian Navy at Bombay, containing an account of a very extraordinary phenomenon, which was observed on the passage from Bombay to the Persian Gulf (the southern passage), on board the Honourable Company's sloop of war Clive, in 1832. On my first going to India, I was in the habit of intimacy with the late Captain David Seton, who was many years Resident at Muscat, and I well remember hearing him relate the circumstance of falling in with the while sea, described by Mr. Dawson, on his occasional voyages to Muscat, during the period of the south-west monsoon. So many years, however, have since elapsed, I am unable to give any more detail of the circumstance related by that officer, and merely here allude to it in proof of the phenomenon having been before observed.