The crowning treat offered within the study-walls, however, was to have the marvels of the Professor's immense and powerful microscope displayed before our wondering gaze. There we became acquainted with the rainbow-tinted plumes of the fly's wing and the jewels that lie hidden from ordinary ken in the pollen and petals of the simplest blossoms.
"Ho!" said the Doctor, rising; and he marched slowly out, leaving the boys looking at one another and then at the busts of the great scholars of Greece and Rome ranged at intervals upon the cornices of the bookcases that covered the study-walls. Neither felt disposed to speak, for an inner door stood ajar, and from the other side came the faintly heard scratching noise of a pen.