datuig lus letter from Gibraltar says : "The more I see of Gibraltar, the lesa I wonder at the tenacity with which it is held by England, and the dislike the Spaniards have for the English tenure of the place. The strength of the position is something wonderful. Nature and military art seemed to have worked together in making Gibraltar as invulnerable as it is possible to be. Nor does the Engineer Department allow modern progresa in either guns or batteries to pass unneticed. Of the former there are some fifty or sixty about to be changed for others of a much larger calibre. Even as it is, the army of men has never yet lived, nor has one of the fleet of ships yet been built, that could for two hours withstand the withering fire of the guns now in positioa on various parts of the Koek."