Page:Ballantyne--The Battery and the Boiler.djvu/123

 heaving the sledge-hammer with the seeming powers of Vulcan himself, and who chanced to be near Robin when he paused to rest and mop the streaming perspiration from his brow, while a well-matched, brother took his place at the anvil.

"You see," he continued, "I can't make out nohow what the electricity does when it gits through the cable from Ireland to Noofun'land. Of course it don't actooally speak, you know—no more does it whistle, I suppose; an' even if it did I don't see as we 'd be much the wiser. What do it do, Mr. Wright? You seem to be well up in these matters, an' not above explainin' of 'em to the likes o' us as ha'n't got much edication."

Few things pleased Robin more than being asked to impart what knowledge he possessed, or to make plain subjects that were slightly complex. He was not always successful in his attempts at elucidation, partly because some subjects were too complex to simplify, and partly because some intellects were obtuse, but he never failed to try.

"You must know," he replied, with that earnest look which was apt to overspread his face when about to explain a difficulty, "that a piece of common iron can be converted into a magnet by electrifying it, and it can be unconverted just as fast by removing the electricity. Well, suppose I