CASATI, PAUL, a learned Jesuit, born at Placentia in
1617. He entered early among the Jesuits; and after having taught mathematics and divinity at Rome, was sent into Sweden to Queen Christina, whom he prevailed on to embrace the popish religion. He wrote, 1. Vacuum proscriptum; 2. Terra machinis mota, Rome, 1688, 4to; 3. Mechanicorum libri octo; 4. De Igne Dissertationes, Parma, 1686 and 1695, 2 vols. 4to; 5. De Angelis Disputatio Theologica; 6. Hydrostatica Dissertationes; 7. Opticae Disputations. It is remarkable that he wrote this treatise on optics at the age of eighty-eight, and after he was blind. He also wrote several books in Italian.