94 



MA THEM A TIC A L SCIENC A'.V. 



enormous audience. He afterwards became astronomer-royal to Matthias 

 Corvinus, King of Hungary. But, unfortunately for him, he was imable to 

 resist the entreaties of Pope Sixtus IV., who induced him to come to Rome. 



Fig. 69. Ptolemy's System, explained by Johann Jliiller, called Regiomontanus. Fac-simile of a 

 Wood Engraving of the "Epitome . . . Johannes de Monte Regio " (Basilese, ap. H. Petri, 

 1543, in folio). 



It is generally believed that the envy and revenge of his scientific rivals had 

 something to do with his premature death in 1476. Although he died at 

 under forty years of age, he had written a number of astronomical and 



