Hesse, William, Prince Of

, rendered his name immortal by his encouragement of learning, by his studies, and by his observations, for many years, of the celestial bodies. For this purpose he erected an observatory at Cassel, and furnished it with good instruments, well adapted to that design calling also to his assistance two eminent artists, Christopher Rothmann and Juste Byrge. His observations, which are of a very curious nature, were published at Leyden, in 1618, by Willebrord Snell; and are in part mentioned by Tycho Brahe, as well in his epistles as in the 2d volume of his “Progymnasmata.” This prince died in 1597. ²