“That's just what I did,” said the old man. “Every night while you were away I had the lens-room filled with the revolving-light squirts, and when these were turned on I knew there was no gettin' any kind of rays through them. A feller may look through a roof and a wall, but he can't look through light comin' the other way, especially when it's twistin' and curlin' and spittin'.”

“That's a capital idea,” said Clewe. “I never thought of using the photo-hose in that way. But there are very few people in this world who would know anything about my new lens machinery even if they saw it. This fellow must have been that Pole, Rovinski. I met him in Europe, and I think he came over here not long before I did.”

“That's the man, sir,” said Samuel. “I turned a needle searchlight on him just as he was givin' up the business, and I have got a little photograph of him at the house. His face is mostly beard, but you'll know him.”

“What became of him?” asked Clewe.

“My light frightened him,” he said, “and the wind took him over into the woods. I thought, as you were comin' home so soon, I wouldn't do nothin' more. You had better attend to him yourself.”

“Very good,” said Clewe. “I'll do that.”

The home of Roland Clewe, a small house plainly furnished, but good enough for a bachelor's quarters, stood not half a mile from the station, and near it were the extensive buildings which he called his Works. Here were laboratories, large machine-shops in which many men were busy at all sorts of strange contrivances in metal and other materials; and besides other small edifices there was a great round tower-like structure, with smooth iron walls thirty feet high and without windows, and which was lighted and ventilated from the top. This was Clewe's special workshop; and besides old Samuel Block and such workmen as were absolutely necessary and could be trusted, few people ever entered it but himself. The industries in the various buildings were diverse, some of them having no apparent relation to the others. Each of them was expected to turn out something which would revolutionize something or other in this world, but it was to his lens-house that Roland Clewe gave, in these days, his special attention. Here a great enterprise was soon to begin, more important in his eyes than anything else which had engaged human endeavor.

When sometimes in his moments of reflection he felt obliged to consider the wonders of applied electricity, and give them their due place in comparison with the great problem he expected to solve, he had his moments of doubt. But these moments did not come frequently. The day would arrive when from his lens-house there would be promulgated a great discovery which would astonish the world.

During Roland Clewe's absence in Germany his works had been left under the general charge of Samuel Block. This old man was not a scientific person; he was not a skilled mechanic; in fact, he had been in early life a shoemaker. But when Roland Clewe, some five years before, had put up his works near the little village of Sardis, he had sent for Block, whom he had known all his life and who was at that time the tenant of a small farm, built a cottage for him and his wife, and told him to take care of the place. From planning the grounds and superintending fences, old Sammy had begun to keep an eye upon builders and mechanics; and, being a very shrewd man, he had gradually widened the sphere of his caretaking, until, at this time, he exercised a nominal supervision over all the buildings. He knew what was going on in each; he had a good idea, sometimes, of the scientific basis of this or that bit of machinery, and had gradually become acquainted with the workings and management of many of the instruments; and now and then he gave to his employer very good hints in regard to the means of attaining an end, more especially in the line of doing something by instrumentalities not intended for that purpose. If Sammy could take any machine which had been constructed to bore holes, and with it plug up orifices, he would consider that he had been of advantage to his kind.

Block was a thoroughly loyal man. The interests of his employer were always held by him first and above everything. But although the old man understood, sometimes very well, and always in a fair degree, what the inventor was trying to accomplish, and appreciated the magnitude and often the amazing nature of his operations, he never believed in any of them.