Professors Marchbanks and Tofty strolled among them, watching as they entered the precise positions of the stars and planets they were observing. All was quiet except for the rustle of parchment, the occasional creak of a telescope as it was adjusted on its stand, and the scribbling of many quills. Half an hour passed, then ar hour; the little squares of reflected gold light flickering on the: ground below started to vanish as lights in the castle windows were extinguished.