TRANSLATOR'S INTRODUCTION. 



Johan. Bolyai de eadem, C. R. austriaco cas- 

 trensium captaneo pensionato. 



Vindobonae vel Maros Vasarhelyini, 1853. 



Bolyai Farkas was a student at Goettingen 

 from 1796 to 1799. 



In 1799 he returned to Kolozsvar, where 

 Bolyai Janos was born December 18th, 1802. 



He died January 27th, 1860, four years 

 after his father. 



In 1894 a monumental stone was erected on 

 his long-neglected grave in Maros-Vasarhely 

 by the Hungarian Mathematico-Physical So- 

 ciety. 



