Here is likewise a great copperas work, which is effected by laying a great quantity of sulphurous and ferruginous earth into a great yard, walled about. This stuff is partly got out of the coal-mines, and out of the adjacent hills; in long tract of time the rains falling here, and passing through this earth, drain into a receptacle; into that they put all the old iron they can get, which it eats up presently: this is boiled to a proper degree of evaporation, then is let into leaden cisterns, where it crystallises against the sides of the vessels in pure copperas: it shoots into figures of regular surfaces, some triangular, others hexangular, &c. MORBIVM, Moresby, a mile north of Whitehaven. Here is a Roman _castrum_, notorious enough, at some distance, by its elevation above the plain of the field it stands in. This is one of the castles built at convenient intervals along this coast, to guard against the depredations of the Scots by sea: it lies upon a piece of high ground in a valley, bounded by higher all around, except seaward. Parton haven, where they are now making a new pier, is on one side; and a large creek, or little bay, on the other. The wall that stood on the edge of the _vallum_ was just 400 foot square, as that at Elenborough. There is a great dry wall of stones now stands in its place, the stones taken originally from it: they are all squared: the stones of all the pastures, fences, and houses round about, and the stones of Mr. Brome’s house, and the churches, are most evidently taken thence; being of the Roman cut, as the inhabitants take notice, and wonder at it: they own the stone is of a different grit from that of the place. The site of the Roman castle has been ploughed up. Many coins and urns found about the place; stones in great quantities still within the place: I saw one squarish, of a very large bulk. A reddish sort of slate to cover houses is dug here; they do not know of any such nearer than Scotland: such was the indefatigable labour of the Romans. There is no ditch about this castle; but the _vallum_ is pretty high quite round. The church stands on the east side of it: in the church-yard is an ash-tree, that bends eastward fifty foot from the stem, by the force of the westerly winds continually pressing on it. The new front of the hall is of an excellent model; I doubt not but it is from some of the admirable Inigo Jones’s designs: the inside is of the same relish. The Isle of Man is very clearly discerned from this place; and the Scotch coast quite to the mull of Galway: it is about thirty miles off.