The crew, as a change from the ordinary routine, would have endeavored to catch a few fish had there been any sign of them; but all that could be seen on the surface of the sea were a few of those yellow-bellied whales which measure about eighty feet in length. These are the most formidable cetaceans in the northern seas, and whalers are very careful in attacking them, for their strength is prodigious. However, in harpooning one of these whales, either with the ordinary harpoon, the Fletcher fuse, or the javelin-bomb, of which there was an assortment on board, there would have been danger to the men of the “Albatross.” But what was the good of such useless massacre? Doubtless to show off the powers of the aeronef to the members of the Weldon Institute. And so Robur gave orders for the capture of one of these monstrous cetaceans. At the shout of “A whale! A whale!” Uncle Prudent and Phil Evans came out of their cabin. Perhaps there was a whaler in sight! In that case all they had to do to escape from their flying prison was to jump into the sea, and chance being picked up by the vessel. The crew were all on deck. “Shall we try, sir?” asked Tom Turner. “Yes.” said Robur. In the engine-room the engineer and his assistant were at their posts ready to obey the orders signaled to them. The “Albatross” dropped towards the sea, and remained, about fifty feet above it. There was no ship in sight—of that the two colleagues soon assured themselves—nor was there any land to be seen to which they could swim, providing Robur made no attempt to recapture them. Several jets of water from the spout holes soon announced the presence of the whales as they came to the surface to breathe. Tom Turner and one of the men were in the bow. Within his reach was one of those javelin-bombs, of Californian make, which are shot from an arquebus and which are shaped as a metallic cylinder terminated by a cylindrical shell armed with a shaft having a barbed point. Robur was a little farther aft, and with his right hand signaled to the engineers, while with his left, he directed the steersman. He thus controlled the aeronef in every way, horizontally and vertically, and it is almost impossible to conceive with what speed and precision the “Albatross” answered to his orders. She seemed a living being, of which he was the soul. “A whale! A whale!” shouted Tom Turner, as the back of a cetacean emerged from the surface about four cable-lengths in front of the “Albatross.” The “Albatross” swept towards it, and when she was within sixty feet of it she stopped dead. Tom Turner seized the arquebus, which was resting against a cleat on the rail. He fired, and the projectile, attached to a long line, entered the whale’s body. The shell, filled with an explosive compound, burst, and shot out a small harpoon with two branches, which fastened into the animal’s flesh. “Look out!” shouted Turner.