RICIUS, AUGUSTINUS:

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By: Joseph Jacobs

Jewish convert to Christianity and astronomer of the fifteenth century. He was a disciple of Abraham Zacuto, and wrote a work on the motion of the eighth sphere, a Latin translation of which appeared at Paris in 1521. He quotes Ibn Ezra, Abraham ben Ḥiyya, and other Jewish authors, and mentions the epoch 1477.

J.