eight o'clock
It was n't until fifty years later that a Dutchman named Huygens discovered the real cause of the variation . You do n't mind a few excerpts from my lectures ? But wait a minute ; let me show you something else . '' It was long after eight o'clock , so imperceptibly did the time slip away , when they emerged from the cabin , and Emmet prepared to go . Leigh looked at his watch , and realised with a quickening of his pulses that the visit so eagerly anticipated must be imminent , that Miss Wycliffe might even now be coming up the stairs . What if she had come , and , failing to find him below to guide her , had gone away offended ? At the thought , he rushed back into the cabin and lighted the lantern which he used for his transits up and down the tower .