...artist he has exhibited as great a proof of mechanical genius as the world has ever produced. He has not indeed made a world; but he has by imitation approached...any man who has lived from the Creation to this day. In a footnote he points out that the European nations traverse the globe with the aid of Hadley's quadrant,...

...forerunner of the planetarium. Jefferson spoke of the orrery in these words: Rittenhouse "has indeed not made a world; but he has by imitation approached nearer...man who has lived from the creation to this day." This same meeting of the Society on April 19, 1768, was a memorable one as seen from the following...

...discovered for himself the theory of Fluxions, made an orrery of which Thomas Jefferson wrote, "He has not indeed made a world but he has by imitation approached nearer its maker than any man who has lived from creation to this day." He established the circle which is the northern boundary of Delaware and which...