Macias pointed out Apes Hill and other objects of interest, and it was unanimously voted that the view was magnificent. The visitors continued their wanderings amid pyramids of cannon-balls, and the region was covered with receptacles for ammunition. They entered the galleries, which extend for thousands of yards, and the first sight of them conveys an idea of the vast amount of labor which has been performed in constructing them, for they have been hewn out of the rock. There are casemates and even halls, one of the latter of which is fifty feet long by thirty-five wide, and is called St. George's Hall. About every thirty feet in the eastern side are embrasures through which project the muzzles of great cannons, which are hardly noticed from the outside as one sails along the sea. A view of the Rock at the distance of a couple of miles on the strait conveys no idea of the strength of the fortifications. In addition to the immense strength of the principal fortress, there are forts and batteries in every available place along the shore, and on the line which separates the place from The Neutral Ground, so that an attack by sea or land could be promptly repelled. Everything has been done to render the works invincible, and the supplies kept in store preclude the possibility of starving out the garrison in any reasonable period of time. But the fortress will never again be besieged or attacked, for many believe "the game is not worth the candle;" and Mr. Bright thought it ought to be ceded back to Spain, for its possession by a foreign power has never ceased to be a thorn in the flesh of the proud and haughty dons of the peninsula. Aside from its military importance, Gibraltar is of the greatest value to England as a stopping-place, where coal and other necessaries can be obtained by her commercial marine. All the steamers which pass through the Suez Canal on their way to India and Australia stop here. If England were at war with any other nation, the place would be of vast importance as a coaling station, where her ships could lie in safety in spite of any force that might assail them. "There are no springs of fresh water on the Rock," said Captain Ringgold to his party. "You remember how the people of the Bermudas are supplied with water; and the residents here, both civil and military, have to depend upon the rainfall. All the water that falls upon the roofs of the houses is economized and gathered up into reservoirs; and that which flows down the sides of the rock is also carefully saved, for a water famine would be as bad as a dearth of food. The navy tank, from which ships are supplied, holds eleven thousand tons of water, as the books put it; but to the common mind that is a very indefinite method of measuring water, and how big that tank is I can form no idea, only that it is a big one.