Published 1891â€"3, this two-volume edition of the ground-breaking work on conics by Greek geometrician Apollonius of Perga (c.262â€"c.190 BCE) was edited by Danish philologist Johan Ludvig Heiberg (1854â€"1928). Volume 1 contains the Greek text of Books 1â€"3, with Latin editorial matter and facing-page translation.