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.