1. The disk, D, was held over the magnet pole, as shown, and the current in the magnet coils cut off by shunting them.

Faraday investigated these phenomena and soon discovered that a copper disc rotated below two magnet poles had electric currents generated in it, which flowed radially through the disc between its circumference and centre.

It seems, therefore, that the magnetic properties of the magnet count for nothing in the phenomena observed.

Seductive shone the Chiefs in arms His steel the nearest magnet drew; Wreathed with its kind, the Gulf-weed drives 'Tis Nature's wrong they rue.

" "Eveena," I answered, almost as much pained as touched by the unaffected humility which had so accepted and carried out my ironical comparison, "one simple magnet-key would unlock the breast whose secrets seem so puzzling; but it has hardly a name in your tongue, and cannot yet be in your hands.

Pole of magnet pointing toward the north.