Trip 2614 of 4950 collection book67
So then the moon displays invariably the same face to the earthbook72 nevertheless to be quite exact it is necessary to add that in consequence ofbook22 certain fluctuations of north and south and of west and east termed her libration she permits rather more than half that is to say fivesevenths to be seen. They also undertook to examine the true nature of that system of parallel ramparts discovered on the moons surface by Gruithuysen a learned professor of Munich who considered them to be a system of fortifications thrown up by the Selenitic engineers.... read all
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