The fishermen working on that slope where they are in the habit of finding coral at 150 and 200 fathoms, and their lines not allowing soundings in greater depths, imagine that the bottom cannot be found, and call it in their exaggerated jargon a bottomless abyss, impossible to be sounded. This idea entertained by people of experience in marine matters, as well as by the simple fishers, appears to be absurd, and founded merely on the fact that nobody has yet cared to undertake the trouble and expense required for such soundings, which according to all appearances will never be made unless some Prince orders for that purpose special vessels with suitable instruments.” In Histoire Physique de la Mer (1725) by Count Luigi Marsigli. Published by Doubleday & Company, Inc. Garden City, New York. p. 177.