The central gates of the marble arch, facing Buckingham Palace, were put up in the summer of 1837: they were designed and cast by Samuel Parker, then of Argyll-place--they are the largest and most superb in Europe, not excepting the gates of the Ducal Palace at Venice, or of the Louvre at Paris. Their material is a beautiful alloy, the base of which is refined copper. Although cast, their enriched foliage and scroll-work bear the elaborate finish of the finest chasing: the height of each gate is twenty-five feet; width, seventeen feet, six inches; extreme thickness, three inches; weight of each, two tons, thirteen cwt.; yet, they are so beautifully hung, that a child might open and shut them. They now terminate at the springing of the arch; but Mr. Parker had cast for the heading a chaste frieze, and a design of the royal arms in the central circle, flanked by state crowns: this portion was, however, irretrievably mutilated by the Government removing the gates from the foundry in a common stage-waggon, without due care to prevent their breakage; yet the work cost, altogether, 3000 guineas! ------------------ EARTHQUAKES IN CHILE. Mr. Darwin, in his very interesting _Journal of a Voyage round the World_, relates that he was one day dining with a gentleman at Coquimbo, when a sharp earthquake happened. He heard the forthcoming rumble, but from the screams of the ladies, the running of servants, and the rush of several of the gentlemen to the doorway, he could not distinguish the motion. Some of the women afterwards were crying with terror, and one gentleman said he should not be able to sleep all night, or if he did, it would only be to dream of falling houses. The father of this person had lately lost all his property at Talcahuano, and he himself had only just escaped a falling roof at Valparaiso, in 1822. He mentioned a curious coincidence which then happened: he was playing at cards, when a German, one of the party, got up, and said he would never sit in a room in these countries with the door shut, as, owing to his having done so, he had nearly lost his life at Copiapo. Accordingly, he opened the door; and no sooner had he done this, than he cried out, "Here it comes again!" and the famous shock commenced. The whole party escaped. The danger in an earthquake is not from the time lost in opening a door, but from the chance of its becoming jammed by the movement of the walls. ------------------ CUVIER IN LONDON. When Cuvier visited England, in 1818, in conversing with the Prince Regent on the subject of our Natural History Collections, he suggested the union of all the private collections in one great national museum, which, from the extent of our colonial possessions, he conceived would surpass every other collection in Europe.