That settled the matter temporarily, so far as Dr. Poulter was concerned. As it also did for me, since I had done everything that was humanly possible along the lines suggested. Moreover, I was reluctant to press the matter further, lest I arouse suspicion. Whereupon my Senior Scientist launched into a subject very close to his scientist's heart: meteor observations. Ever since darkness had fallen, he and his crew, in co-operation with observatories scattered throughout the world, had been keeping a continuous watch on the sky for meteors. As I was interested in this and frequently found meteoric fragments in the snow I melted for water, I was informed from time to time about the progress of these observations, either by Dr. Poulter directly or by Charlie Murphy. Into the roof of his own shack at Little America, Dr. Poulter had built a transparent turret, almost flush with the surface, which faced the four quadrants of the sky and was manned continuously by observers when the sky was clear. The results had been phenomenal. On account of the extraordinary clarity of the Antarctic atmosphere, vast numbers of meteors were observed which would not ordinarily be visible through the layer of dust and water particles which obscures the sky over more temperate regions. This was an important astronomical discovery which changed upwards the prevailing estimates of how much material was constantly being received by the earth from this source.
«We're delighted with this piece of research,» Dr. Poulter said. «I had no idea that it would turn out so well. Now, we're planning to go a step farther. Demas, as you know, is overhauling the tractors. The canvas tops are being replaced with stout wooden bodies, equipped with bunks, stoves, radio — complete trail units, in other worlds. What we'd like to do is to take one of the cars out and set up a second meteor station on the Barrier about thirty miles out on the Southern Trail.»
«How long expect occupy base?» I keyed back.
«A couple of days, during a clear spell,» was the answer in the earphones. «That way, we can get a base line from which to calculate the radients, the altitude at which the meteors enter the atmosphere, and so forth.»
«When will tractors be ready?» was my next question.
Poulter wasn't sure. That would depend upon Demas and the mechanics. «But Number One should be ready within a few days.»
«Test run?» I guessed.
«To Amundsen Arm [a heavily crevassed arm of the Bay of Whales, lying about 10 miles south of Little America] and back,» the scientist said. «That's far enough to give us a line on the extent to which the flags are snowed under, and whether we'll be able to follow the trail.»
«When?»
«Oh, in about a month. We'll see how things turn out, then we'll discuss the whole project with you.»