midday
When it was complete , I had a tower as high as the mountain itself erected upon its summit . And next I caused section after section of the long , iron , pole-to-pole rod , which had tricked Klow , to be hauled up into the tower . I was only careful to begin the process from the top and work downward . I gave word that the last three sections be inserted at midday at a given day . And at that hour I was safe inside a non-magnetic room . I know right well when the deed was done . There was a most terrific earthquake .