The guns had recently been tried, and found to be perfect, though the explosion was not so terrible as had at first been feared. There had been some apprehension that a weapon which was to be so destructive to enemies, might not be an innocent toy to those who fired it; that it might split the ear-drums of the gunners themselves. Some years ago I was at Syra, in the Greek Archipelago, when the English ironclad Devastation was lying in port, which had four thirty-five-ton guns, (the monsters of that day,) and one of her officers said that they "never fired them except at sea, for that the discharge in the harbor would break every window in the town." But here the effect seems not to have been so great. One who was present at the firing of one of the hundred-ton guns, told me that all who stood round expected to be deafened by the concussion. Yet when it came, they turned and looked at each other with a mixture of surprise and disappointment. The sound was not in proportion to the size. Indeed our Consul tells me that some of the sixty-eight pounders are as ear-splitting as the hundred-ton guns. But an English gentleman whom I met at Naples gave me a different report of his experience. He had just come from Malta, where they have a hundred-ton gun mounted on the ramparts. One day, while at dinner in the hotel, they heard a crash, at which all started from their seats, and rushed to the windows to throw them open, lest a second discharge should leave not a pane of glass unbroken. But this came only as they left the harbor. When about three miles at sea, they saw the flash, which was followed by a boom such as they never heard before. It was the most awful thunder rolling over the deep in billows, like waves of the sea, filling the whole horizon with the vast, tremendous sound. It was as "the voice of God upon the waters." But, of course, with the hundred-ton guns, as with any other, the main question is, not how much noise they make, but what is their power of destruction. Here the experiment was entirely satisfactory. It proved that a hundred-ton gun would throw a ball weighing 2,000 pounds over eight miles![1] With such a range it would reach every part of the bay, and a brace of them, with the hundreds of heavy guns along the Line-Wall, might be relied upon to clear the bay of a hostile fleet, so that Gibraltar could hardly be approached by sea. But these are not the whole of its defences; they are only the beginning. There are batteries in the rear of the town, as well as in front, that can be fired over the tops of the houses, so that, if an enemy were to effect a landing he would have to fight his way at every step. As you climb the Rock, it fairly bristles with guns. You cannot turn to the right or the left without seeing these open-mouthed monsters, and looking into their murderous throats. Everywhere it is nothing but guns, guns, guns! There are guns over your head and under your feet--