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"Current was supplied to the road by underground feeder cables from the dynamo-room of the laboratory. The rails were insulated from the ties by giving them two coats of japan, baking them in the oven, and then placing them on pads of tar-impregnated muslin laid on the ties.

"Well," he answered, "I suppose I was a little careless in fact, I must have been. You see, some of the building gang had left their axes in the dynamo-room." "That," said Laura dryly, "certainly accounts for the axe being there. I'm not sure it goes very much further." "It really wasn't very much of a cut."

We then went to the dynamo-room, where I pointed out the machines converting the steam-power into electricity, appearing later in the form of light in the lamps. After that they were shown the meters by which the consumption of current was measured.

All had happened in a minute or two, and the clanging of the fiddle and the patter of the dancers' feet had drowned any sound that rose from the dynamo-room. Nasmyth had not long to wait before Gordon stepped in and quietly set about his surgical work, after someone had dipped up a little water from the sluice.

An examination of the boiler-room, which he reached by moving a ton of fallen stone-work from the doorway into the dynamo-room, encouraged him still further. As he penetrated into this place, feeble-shining lamp held on high, eyes eager to behold the prospect, he knew that success was not far away.

Isaacs, who did a great deal of photographic work, and to whom we must be thankful for the pictures of Menlo Park in connection with Edison's work. "Among others who were added to Mr. Kruesi's staff in the machine-shop were Messrs. J. H. Vail and W. S. Andrews. Mr. Vail had charge of the dynamo-room.

And then I had come to the dynamo-room, where the revolutions were twelve hundred to the minute, and then to the turbines themselves insignificant little things, with no swagger of huge crank and piston, disappointing little things that developed as much as one-third of the horse-power required for all the electricity of New York.

You should have these men on probation and subject to passing an examination by me. This will wake them up." Edison's examinations are no joke, according to Mr. J. H. Vail, formerly one of the Menlo Park staff. "I wanted a job," he said, "and was ambitious to take charge of the dynamo-room. Mr.