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The exciting current was at first obtained from a small permanent magneto machine; but it was afterward found that the machine could be made self-exciting. Soft-iron electro-magnets, after being once magnetized, remain slightly magnetic. This will produce a weak current in the revolving armature which is turned into the magnet coils.
After the completion of those researches, and in a paper forwarded to the Royal Society on October 22, 1851, he devotes himself to the formal development and illustration of his favourite idea. The paper bears the title, 'On lines of magnetic force, their definite character, and their distribution within a magnet and through space. A deep reflectiveness is the characteristic of this memoir.
These men, however, did not work alone. Numbers of scientific men joined the Magnetic Union, learned the use of the new instruments and the new methods of reducing the observations; and in every city of Europe you might see them, at certain stated times, sitting, each in his cold wooden shed, with his eye fixed at the telescope, his ear attentive to the clock, and his pencil recording in his note-book the instantaneous position of the suspended magnet.
Now when I bring two red ends, that is, two positive poles together, they drive each other away. See! the magnet I am not holding runs away from the other. But if I bring a red end and a black end, that is, a positive and a negative end together, then they are attracted and cling.
The successive magnets are charged oppositely, the sections being divided halfway between by insulators, the nature of the electricity in each section being governed by the charge in the magnet.
It was, as I have said, almost that of a sphinx, a dusky-hued sphinx, as though the matter which composed it had been oxidized by the inclemency of the polar climate. And then a possibility flashed into my mind, an hypothesis which explained these astonishing phenomena. “Ah!” I exclaimed, “a loadstone! that is it! A magnet with prodigious power of attraction!”
"Git out, boss," and the rough, bearded digger laughed childishly with pleasure; "if I sees anythin' in the Champion about me, blow me but I'm goin' back to Townsville, and I mean to spark that gal at 'Magnet Villa' she that was a-cryin' when Miss Caroline came away." "Right you are, Dick. You have promised Jacky fifty pounds if he brought Miss Carolan back and you will give it to him.
Must we stop before Mabuse, or before the cattle piece of the Dutch school, seventeenth century? A Monticelli seems out of key here, and the subject is an unusual one for him, Christ With the Little Children. The Little Princess, by P. Moreelse, has the honour, after Rembrandt, of being the most frequently copied picture in the Rijks. The theme is the magnet.
The feeblest steel filing which is drawn to a magnet, would think, if it had consciousness, that it went to the magnet of its own free will. My soul rushed to hers as if dragged by the force of a loadstone. But she was not to be mine. I had a note from her, a sweet note, thanking me with much tenderness for my affectionate regard for her, but saying that her mind had long since been made up.
He had no more imagination than one of his own reports. He had a long, sad face, like a tired workhorse's, and heavy black eyebrows that curved high in the middle and arched downward at each end circumflexes accenting the incurable stupidity of his expression. His black mustache drooped the same way, too, in the design of an inverted magnet.
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