I see no reason to suppose that this class of locks was confined to Scotland or to Scandinavia. They may probably have existed in other parts of Europe, where, being made entirely of wood, they have long since decayed, and their representations may have survived only on the outskirts of civilisation. The law of geographical distribution is inexorable--nothing can make the North of Scotland or of Norway or the West of Ireland centres of the arts, and it is to such places we must look for the survival of primitive contrivances. A precisely similar key to those here described, but of iron, was found with Roman remains near Gloucester, and is figured in LYSONS'S 'Magna Britannia,' vol. ii., Plate 11, showing that a wooden lock of this kind must have been in use in England at that time. Figs. 23A to 25A, Plate II., is a similar lock used in Norway, and copied by me from a specimen in the Hazilius Museum at Stockholm.[2] Figs. 26 to 28A, Plate II., is another in the Museum at Kew Gardens, copied by permission of Sir JOSEPH HOOKER; it was made by the negroes in Jamaica. Figs. 29A to 31A, Plate II., is a similar one from British Guiana, in the CHRISTY Collection. One is tempted by the presence of these locks in the West Indies to suppose that they may have been carried by the negroes from their African homes, and the resemblance commonly attributed to them to the Egyptian wooden lock, constructed on nearly the same principle, might lead to the inference that they may have passed in that way to the West Indies; but it will be seen hereafter that they differ in detail from the Egyptian pin-locks. They are of the Scotch or Scandinavian type, and in all probability were imported into the New World by Scotchmen rather than negroes. [2] Mr. JOHN CHUBB in a paper read before the Institution of Civil Engineers, April 9, 1850, quotes a work by L. MOLINUS, "De Clavibus veterum," the date of which is, however, not mentioned, in which that author states that the use of keys was in his time still unknown in many parts of Sweden.