'There was a talk of his going to Iceland with Mr. Diamond, which would
probably have happened had he lived.' _Ante_, i. 242. Johnson, in a
letter to the wife of the poet Smart, says, 'we have often talked of a
voyage to Iceland.' _Post_, iv. 359 note. Mrs. Thrale wrote to him when
he was in the Hebrides in 1773:--'Well! 'tis better talk of Iceland.
Gregory challenges you for an Iceland expedition; but I trust there is
no need; I suppose good eyes might reach it from some of the places you
have been in.' _Piozzi Letters_, i. 188.