We walked on along the shore until stopped by the Helford river--really an arm of the sea--which we crossed in a ferry-boat.  We caught sight, in the far distance to the southward, of the Manacles, a group of isolated rocks, on which more than one stout ship has been knocked to pieces.  All along were fine romantic cliffs, the views rewarding us for our exertions.  We returned on board soon after sunset, and I employed the rest of the evening in writing up my journal.