Page:Germ Growers.djvu/242

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237

have seen the battery that we are driving by now; very well, here is the spare battery which, according to Leäfar's promise, I find." He pointed to the spare battery, which was placed on a sort of bracket within my sight. He took it off, or rather out of, the bracket with his two hands and put it back again.

"I see," said I, "that it is larger; it seems heavier than the other, and in some details different: what of that?"

"Thereby hangs a tale," he said. "I have not been able to learn anything about the way of making these batteries. Indeed, I did not try; there was no time to spare from the more urgent matters. What I have learned is that they have two kinds of battery, one much more easily made and which wastes very much more quickly, but which drives the cars faster while it lasts. That is the sort that we are using now. The other sort is more difficult of production and wastes very much more slowly, and drives the cars more slowly. On long voyages, as I understand, they use the latter sort mainly, reserving the former sort for short voyages and for spurts. Now the spare battery is of the sort that wastes more slowly and drives the car more slowly; whereas it is a battery of the other sort that has been put into operation, what does that