Belgrado, James

, an eminent Italian mathematician, was born at Udina, Nov. 16, 1704, and from his infancy afforded the promise of being an ornament to his family and country. At Padua, where he was first educated, his proficiency was extraordinary, and at the age of nineteen he excited considerable attention by an elegant Latin oration he delivered in honour of cardinal Barbadici. He afterwards entered the society of the Jesuits at Udina, and having completed his noviciate, went to Bologna, and studied mathematics and theology at Parma, where he was appointed professor of mathematics and had the direction of the observatory, and became eminent as an observer of the phenomena of nature, and a profound antiquary. When the society of the Jesuits was suppressed, Belgrade went to Bologna, and was appointed rector of the college of St. Lucia, where, and in other parts of Italy, he occasionally resided until his death in 1789. The extent and variety of his knowledge will be best understood by a list of his works. 1. “Gratulatio Cardinali J. F. Barbadico, &c.” already noticed, Padua, 1723. 2. “Ad disciplinam Mechanicam, Nauticam, et Geographicam Acroasis critica et historica,” Parma, 1741. 3. “Ad disciplinam Hydrostaticam Acroasis historica et critica,” ibid. 1742. 4. “De | altitudine Atmospherae aestimanda critica disquisitio,” ib. 1743. 5. “De Phialis vitreis ex minimi silicis casa dissilientibusAcroasis,” Padua, 1743. 6. “De Gravitatis legibus Acroasis Physico-mathematica,” Parma, 1744. 7. “Devita B. Torelli Puppiensis commentarius,” Padua, 1745. 8. “De corporis elasticis disquisit. physico-mathem.” Parma, 1747. 9. “Observatio Soils defectus et Lunae,” Parma, 1748. 10. “I fenomeni Elettrici con i corollari da lor dedotti,” Parma, 1749. 11. “Ad Marchionem Scipionem Maphejum epistolae quatuor,” Venice, 1749. 12. “Delia Reflessionc de Gorpi dall‘ Acqua,” &c. Parma, 1753. 13. “Observatio defectus Lunae habita die 30 Julii in novo observatorio, 1757.” 14. “Dell‘ azione del caso nelle invenzioni, e dell’ influsso degli Astri ne’ corpi terrestri, dissertationi due,” Padua, 1757. 15. “Observatio defectus Lunae,” Parma, 1761. 16. “De utriusque Analyseos usu in re physica,” vol.11, ibid. 1761. 17. “Delle senzazioni del calore, e del freddo, dissertazione,” ibid. 1764. 18. “II Trono di Nettuno illustrate,” Cesene, 1766. 19. “Theoria Cochleae. Archimedis,” Parma, 1767. 20. “Dissertazione sopra i Torrenti,” ibid. 1768. 21. “Delia Rapid ita delle idee dissertazione,” Modena, 1770. 22. “Delia proporzione tra i talenti dell‘ Uomo, e i loro usi, dissertazione,” Padua, 1773. 23. “De Telluris viriditate, dissertatio,” Udina, 1777. 24. “Delia Esistenza di Dio da’ Teoremi Geometrici dimostrata, dissert.” Udina, 1777. 25. “Dall‘ Esistenza d’una sola specie d‘esseri ragionevoli e liberi si arguisce l’Esistenza di Dio, dissertazione,” ibid. 1782. 26. “Del Sole bisoguevole d‘alimento, e dell’ Oceano abile a procacciarglielo, dissert. Fisico-matematica,” Ferrara, 1783. 27. “Dell' Architettura Egiziana, dissert.” Parma, 1786. He left also several manuscript works, and published some pieces in the literary journals, being a correspondent of the academy of sciences at Paris, and a member of the institute of Bologna. ¹