“One last thing,” he said; “I want to see how that incandescent light in the ceiling can be connected without outside metal. That reflector, by the way, looks like clear glass, but it must have some reflecting power.”
He jumped lightly to a chair, thence to the table, and turned to look through the clear glass of the big hemispherical shade, which had guarded the incandescent in the ceiling.
“Oh, I say,” he exclaimed, “here’s a most extraordinary thing. Everything seen through this is bent double. Here’s the biggest refraction I ever saw. Can it be the glass, or something inside of it? This thing is hermetically sealed above. Do you know, I believe we’ve got one solution of the mystery here.”
We all stood looking eagerly up at him, as he gazed through the globe.
CHAPTER XIII
With a quick spring, Dorothy was first on a chair, and then on the table beside her brother. She bent to inspect the crystal hemisphere, looked at it from various points, and then both of them began examining the construction of the lamp shade.
“It’s hermetically sealed above?” said Tom finally, a note of inquiry in his voice.
“It seems to be,” answered Dorothy briefly. “Tom, jump down, will you, and let Mr. Hamerly come up here. Jim, will you and Mr. Swenton see if you can find another lamp shade like this in the storeroom.”