The Highest Bridge in the World

highest bridge in the world is the recently constructed "Zambezi bridge" in Africa, ich is 450 feet or one- "^

twelfth of a mile high. The proposed electric car bridge, across the Royal Gorge in Colorado, will be 2, 627 feet from the surface of the water below. It will be of the steel suspension type, 230

feet long and 22 feet wide. The floor will be of one and a half inch plate glass, set in steel frame work, which will enable visitors to view trains on the D. & R. G. system as they pass over the wonderful "hanging bridge" of the Royal Gorge, over a half mile beneath. E. D. Partridge, B. S.

Submarine Coal Mining.

It is quite an interesting fact that coa mining is going on all the time under the bed of the Atlantic ocean in Breton, Canada. There is a seam about six feet thick, of the best quality of coal, which is mined at a depth of from 700 to 1, 300 feet below the surface of the water. At the shore line the vein is 690 feet below the surface, and dips seaward about one foot in twelve. The present workings are over a mile from the shore line, and are un-