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The two comets thus formed out of one separated to a distance of about one hundred and sixty thousand miles, and then raced side by side, sometimes with a curious ligature connecting them, like Siamese twins, until they disappeared together in interplanetary space. One or both of these tubes are now warmed to the softening point in such a place that the tubes can be made to meet properly, and the two cut ends pressed together. Good cheese, well worked to make it tough, is also good. Care must be taken in these preliminary operations to avoid heating the more fusible glasses sufficiently to soften them. Materials: Wool fibers, mohair fibers, sample of mohair brilliantine.