We described the method of using diving-bells in a previous number, but this new invention is built on an entirely different plan, and can accomplish results never before dreamed of. The kind formerly made could not withstand the pressure of the water at any very great depth. No machine had been invented capable of bearing this strain until the new Smith bell was tried. This bell has worked successfully in two hundred feet of water, and it is claimed can withstand the pressure at a much greater depth. The most remarkable thing about the bell is that it can move about under the water, instead of merely being let down to remain in one place like an ordinary diving-bell. Attached to its cage are four long arms, which can be moved about at will by the persons in the bell. With the aid of these arms the huge machine can move from place to place like a great spider. The arms can also be drawn together like pincers, and made to grip objects and carry them up to the surface. The interior of the bell is lighted by electricity. Outside it carries a large headlight, which enables those in the bell to see around them for a distance of a hundred feet. Experiments have been made in the Great Lakes with this bell, and its first practical work has been to locate the exact position of the steamer _Pewabic_, which was wrecked in Lake Michigan thirty-two years ago. Many attempts have been made to find this steamer because she was laden with a cargo of copper ingots, and had besides a large sum of money on board, the two together amounting to about $140,000. All attempts had, however, been unsuccessful until the Smith bell was used. The steamer was found lying in one hundred and sixty feet of water. To prove the truth of the find, portions of the wreck were brought to the surface. The success in Lake Michigan has determined the owner of the diving-bell to try and raise the North German Lloyd steamer _Elbe_, which was wrecked off the coast of England in 1895. The owners of the _Elbe_ have already spent about fifty thousand dollars in efforts to recover their vessel. The position of the ship was located by divers, who, at a depth of one hundred and seventy-one feet, found the upper works of the steamer. These men, however, declare that it is utterly impossible to raise the ship. The _Elbe_ had a valuable cargo and a large amount of gold on board. The owners of the diving-bell are determined to make the effort to raise her and secure for themselves the immense reward offered. They intend to remove the cargo first and then raise the hull, if it is possible to do so. They are very hopeful of success, and say that the task does not appear to them any more difficult than the raising of the cargo of the _Pewabic_ which latter task they are sure of accomplishing. * * * * * On the 24th of June there was a celebration in Halifax, Nova Scotia, of the four hundredth anniversary of the discovery of the mainland of America.