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“He said if the old scientist and his young friends would build the proper kind of a projectile, they could make a trip to the planet Mars, by means of a wonderful motor, operated by a power called Etherium, of which Mr. Roumann held the secret.”
“Mr. Roumann was having more trouble with his Etherium motor than he anticipated.”
“I expected the Etherium motor to stop as soon as it reached the atmosphere of the planet, and it has done so.”
“But there is one point about my Etherium motor that still bothers me," said the German.”
“Though Mr. Roumann had provided duplicates of the power plates for the Etherium motor, it was quite a task to take out the broken pieces and insert the new ones.”
“Professor Henderson were in the pilot house, and Mr. Roumann was in the engine-room, adjusting the Etherium motor, for he expected to shortly put it in operation.”
“Mars, and again were sailing through space, the Etherium motor doing good work.”
“He had not disclosed to his companions the secret of the force that was to make it move, nor had he told them how to work the Etherium and atmospheric motors.”
“For two days the Etherium motor kept sending the projectile through space.”
“They appeared to understand everything but the Etherium motor, but Mr. Roumann illustrated the force by which it was worked, by pointing to the metal boxes containing the red substance, which gave out light as well as power, indicating that some force like that worked the motor.”
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