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100 what it passed over disappeared. I watched the operation with breathless attention, and I saw the body of the car which had seemed to hang in the air gradually disappear as the brush passed over it, until nothing was left either above or below. I watched another which was complete in all parts until nearly the whole of the supporting framework disappeared beneath the brush. It looked for all the world as if some sort of invisible paint were being smeared over the conveyances. That they were conveyances of some sort I felt no doubt, but whether they were meant to travel on land or water I doubted. I saw no wheels, but these might be hidden by the framework, and there were things attached to each which might be said to have a remote resemblance to the screw of a steamboat. I may as well say at once that they proved to be carriages for travelling through the air.

Just then, some of the men who were working on the other side of the platform turned their faces towards me, and one of them, who seemed to be a sort of director or superintendent, came from behind them moving in the same direction. All kept moving towards where I stood until they were so near that I could clearly distinguish their features and their dress. The costume of all was exactly the same but unlike anything that I