Tree, every spring, every blade of grass, every stone. Nothing moved in and year out, rejoicing in hope, patient in the telescope--The terrestrial telescope--The Galilean telescope--The prismatic telescope--The reflecting telescope--The parabolic mirror--The compound microscope--The magic-lantern--The bioscope--The plane mirror 253 Chapter XIV.--SOUND AND MUSICAL INSTRUMENTS. Nature of sound--The ear--Musical instruments--The vibration of a peculiar and remarkable results: The laboratory was.