add to the discomfiture of the inventor, a professor of physics in one of the well-known colleges declared in a newspaper article widely circulated that the Edison lamp would never last long enough to pay for itself. "I'll make a statue of that man," said Edison to me one day when he was still groping in the dark for the secret of his temporary defeat, "and I'll illuminate it brilliantly with Edison lamps and inscribe it: 'This is the man who said the Edison lamp would not burn.'" To go back to Edison, shaking his bottle in the sunlight, his brown study gave way to a pleasant smile of welcome when I had made my business known. "Take a look at these filings," he said, making room for me at the bench. "See how curiously they settle when I shake the bottle up. In alcohol they behave one way, but in oil in this way. Isn't that the most curious thing you ever saw--better than a play at one of your city theatres, eh?" and he chuckled to himself as he shook them up again. "What I want to know," he went on, more to himself than to me, "is what they mean by it, and I'm going to find out." To me the interesting spectacle was Edison tossing up his bottle and watching the filings settle, and not the curious behavior of the filings. When he put the bottle by, with a deep sigh, he took me over the whole place, pointing out with particular pride the apparatus for making the paper carbons for the lamps, and the new forms of Sprengel mercury pumps that did better work in extracting air from the lamps than any yet devised.