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In the merest fraction of a second, as the perforated paper continues to pass over the transmission drum, the rollers 5 or 7 close the circuit through other perforations and t e current passes in the opposite direction, over the line wire, through pins 1 or 3, and returns through the earth. In this case the iron pins mark the paper tape, but the tellurium pins make no mark.
On the south rose the volcano, the extremity of the promontory that jutted out from the continent that formed the framework of the sea; whilst in every direction the strange soil, with its commixture of tellurium and gold, gleamed under the sun's rays with a perpetual iridescence. Apparently rising with them in their ascent, the horizon was well-defined.
He was going to come back, he was going to bring her mule, and make her his partner in the mine. She looked out and there was his dust! Billy gazed away in ecstasy at the dust cloud in the distance, and at the white spot that was Tellurium, her mule; and when the rider came closer she skipped back through the tunnel and danced along the trail to the house.
"Oh, we must talk with Claire about that, mustn't we?" she protested, blushing. Then softly: "She's the only mother I've got, you see. And besides, there's no " "No, not even a justice of the peace!" he said, laughing. "We might strap on our old snowshoes, and go to Tellurium." "The idea!" "Well, listen. Do you know what I've been thinking?" She shook her head. "Paris."
Up and up it led, until Tellurium was exhausted and Wilhelmina had to get off and walk; and at last, when it was almost at the summit of the range, it entered a great stone patch and was lost. But the stone-patch was not limitless, and Wilhelmina was determined she rode out around it, and soon Good Luck dropped his nose and set out straight to the south. To the south!
But one there was who had seen him, and saved him from the Sink, and loaned him her mule to ride; and in honor of her, though he could not spell her name, he had called it the Willie Meena. Billy sat on Tellurium and gazed with rapt wonder at the scene which stretched out below.
His reason for coming to this conclusion was that the caloric emitted by the rising vapors of the hot lava seemed to be oozing, as it were, out of the tellurium, which had been demonstrated already to be a conductor of heat.
And in this matter I do not think your impertinent orderly will venture to put Montmartre into the comparison. This soil is of a substance not unknown upon the earth." And speaking very slowly, the professor said: "It contains 70 per cent. of tellurium, and 30 per cent. of gold." Servadac uttered an exclamation of surprise.
In the third case are Tellurium and Tellurets. In the fourth are samples of native Arsenic, and its combinations with nickel and cobalt; Carbon in its various forms, pure as in the diamonds, which the visitor will notice attentively, some imbedded in the earth in which they were discovered, and models of celebrated diamonds; Black Lead in porcelain earth, for which Cumberland is celebrated; Selenium in its combinations with lead, mercury, sulphur, and other metals; and a medallion, in selenium, of Berzelius, who discovered this metal in 1818.
In the following diagram, which shows the theory of this arrangement, it will be seen that both the transmitting rollers and the receiving pins are arranged in pairs, one pair in each case being slightly in advance of the other. Of these receiving pins, one pair 1 and 3 are of iron, and the other pair 2 and 4 of tellurium.
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