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In electricity great strides were made. Between the years 1705 and 1711 Francis Hawksbee published in the Transactions of the Royal Society several experiments, in which he had, for the first time, discovered the production of the electric spark by friction, and electrical attraction and repulsion. In 1720 Stephen Gray, a pensioner of the Charterhouse, published the result of his experiments on this subject, with a list of the substances which showed electricity under friction; and in 1732 he discovered the conducting property of non-electrical bodies. Before 1739, Dufray, keeper of the King's Garden at Paris, discovered the repellent power of two similarly-electrified bodies, and the attraction of these positively and negatively electrifiedor, as he termed it, possessing the vitreous and the resinous electricity. Cuneus and Lallemand discovered the mode of accumulating the electric fluid in what was called the Leyden jar in 1745. This discovery gave a new impetus to inquiry, and Nollet, in France, and Watson, in England, conceived the hypothesis of the jar being overcharged on one side and undercharged on the other. This growing perception of the positive and negative conditions of the electric fluid received confirmation from the experiments of Benjamin Franklin, in America. Franklin soon improved the Leyden jar into an electrical battery; and, in 1752, he proved the identity of electricity and lightning by his grand experiment of the kite. On this he recommended lightning conductors, which, however, were not used in England till ten years afterwards.<024> このページの先頭です
ONE:With his flashlight flicking the dots and dashes of the Morse code to Sandy, Dick spelt out a message explaining his idea. Twice he flashed the message, got an O. K. from Sandy, and told Larry.
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ONE:
TWO:Barnwell had told Brewster about him also. "His name is Cairness,Charles Cairness,and he's got a lot of fool theories too," he explained. "He goes in for art, makes some pretty good paintings of the Indians, and has picked up some of their lingo. Made himself agreeable to the squaws, I guess. The interpreter says there's one got her nose cut off by her buck, on his account."
THREE:There was now at Grant the prospect of a girl, and for days ahead the bachelors had planned about her. She was Landor's ward,it was news to them that he had a ward, for he was not given to confidences,and she was going to visit the wife of his captain, Mrs. Campbell. When they asked questions, Landor said she was eighteen years old, and that her name was Cabot, and that as he had not seen her for ten years he did not know whether she were pretty or not. But the vagueness surrounding her was rather attractive than otherwise, on the whole. It was not even known when she would arrive. There was no railroad to[Pg 14] Arizona. From Kansas she would have to travel by ambulance with the troops which were changing station."I don't mind," she began; and then her strict truthfulness coming uppermost, she corrected herself: "At least, I don't mind very much, not so much as you thought I would."
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THREE:An active warfare had been going on at the same time in North Carolina. Lord Cornwallis had, however, no longer to compete with the inefficient Gates, but with General Greene, a much more vigorous man. On the 17th of January, Colonel Tarleton, who had been dispatched with a thousand men, horse and foot, to attack a body of Americans under General Morgan, came up with them at a place called Cowpens. Tarleton's troops were worn out by their long march, but that impetuous officer gave them no time to rest themselves, but fell on the enemy with loud shouts. The militia fled at once, and the advance of the English endangered the flanks of the Continentals, and it became necessary to make a retrograde movement. This Tarleton mistook for a retreat, so accustomed was he to carry all before him, and his men were rushing on without regard to order, when the Americans suddenly faced about, poured a deadly fire into the British at thirty yards' distance, and then,[280] briskly charging, broke their already disorderly line. Being closely pursued, they lost, in killed and wounded, upwards of five hundred men.