Work on Vardun was nearing completion when they landed. Under Barry's skillful supervision, the work leaped forward and as the days passed, each showed definite progress. The days added into months, and then two months passed, and in the middle of the third month the sub-etheric set was being given its load tests. These were more than satisfactory, and on the morrow, there would be a complete test of the first interplanetary voice-two-way.
The intervening hours were spent on the ordinary coded communication means, developing times and procedures for this test. A full three-hour-period was spent merely in synchronizing the clocks between the two planets. Perfect synchronization was impossible because of the twelve minute time of transmission, but an approximation was made which was assumed to be close enough.
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