Farther on we reached a fine headland called Castle Treryn, an ancient entrenchment having occupied the whole area.  On the summit stands the famous Logan rocking-stone, which is said to weigh eighty tons.  Putting our shoulders under it, by some exertion we made it rock or move.  Once upon a time a Lieutenant Goldsmith of the Royal Navy--a nephew of the author of the _Vicar of Wakefield_--happening to land here, took it into his head to try to dislodge the stone; and, somewhat to his dismay, probably, he succeeded in doing so completely.  Over it fell, but did not go rattling down the cliffs, as I had heard asserted, for it would then have inevitably been broken to pieces.  Still, as the stone was on the ground, and could no longer rock, the people in the neighbourhood were highly incensed against the lieutenant, especially as visitors were not likely to come as heretofore to the spot.  They accordingly memorialised the Admiralty, complaining of what had happened, and Lieutenant Goldsmith was ordered to replace it.  He thereupon erected over it some vast shears, and by means of tackles ingeniously contrived, lifted back the stone on to the pivot on which it had before rested. He, however, found it impossible to poise it as nicely as before, and consequently it is necessary to exert more strength to make it move than was required before it had been tumbled over.  To make some amends to the people, the gallant lieutenant replaced another stone of a similar character which had fallen from its position.