CHAPTER NINETEEN Oliver couldn’t quite believe what he was hearing. Sir Isaac Newton was one of his heroes! “Newton?” he stammered. “As in the scientist? The man who discovered gravity?” From her position on the doorstep, the maid chuckled. “Well, I don’t know what he’s discovered, boy, it’s far over my head. But he is a genius of science, I do believe. He left London because of the plague and has only just returned there.” Thinking of the plague put things a little in perspective for Oliver. As thrilling as it was to be on a quest to meet Isaac Newton, England in the seventeenth century was a dangerous place. Not to mention unsanitary. There was all manner of diseases they could pick up. Oliver had even read in a history book that most people had lice! The maid turned her head over h