reduced to nothing, and consequently required less force to propel them. About the same time a new light was discovered, which was so powerful and so easy to produce that it immediately superseded the old electric light.
Great as these discoveries were, still more astonishing ones were in store. The ether-motions were still further investigated, and the result was that three new and extremely powerful forces were discovered. These were Dynogen, Pralion, and Ednogen, and practically illimitable supplies of them could be obtained from the regions of space. They could be used either separately or in combination, according to the nature of the effect desired. When all three were set in action together, an amount of energy equal to many thousands of horse-power could be obtained from an engine of very small compass. It was then that the crowning application of all these discoveries was made, and this was the navigation of space. Gravity
