"O telescope, instrument of much knowledge, more precious than any scepter Is not he who holds thee in his hand made king and lord of the works of God?"-John Kepler. If the pure and elevated pleasure to be derived from the possession and use of a good telescope of three, four, five, or six inches aperture were generally known, I am certain that no instrument of science would be more commonly found in the homes of intelligent people. The writer, when...