James Stirling, Journal of the Royal Geographical Society of London (1833)
“ The dark objects on the surface of the sea proved to be patches of small floating cinders. The island, or crater, appeared to be seventy or eighty yards in its external diameter, and the lip as thin as it could be consistent with its height, which might be twenty feet above the sea in the highest, and six feet in the lowest part, leaving the rest for the diameter of the area within. These details could only be observed in the intervals between the great eruptions, some of which I witnessed from the boat. No words can describe their sublime grandeur ”
