AMBROSE-ILSAND, a small island laid down in some of the most approved charts, and particularly mentioned in Mr Robertson's Elements of Navigation, as lying in S. Lat. 25. 30. W. Long. 82. 20. It was searched for, however, in 1767, by Captain Carteret, with such diligence, that he concludes it to have no existence, as he could not discover land any where near that place.