Despite being generally unknown to the greats of contemporary mathematics, Apollonius's Conics is said by Chasles to contain 'the most interesting properties of conics'. Written by one of the great pioneers of geometry, this scarce text contains a comprehensive account of the mathematics of conics, and as such constitutes a valuable to addition to the libraries of serious mathematicians and historians alike. Apollonius of Perga was a Greek geometer and astronomer, most famous for his work pertaining to conic sections and whose methodology and terminology influenced such intellectual giants as Ptolemy, Johannes Kepler, Francesco Maurolico, Isaac Newton, and René Descartes. This rare text is proudly republished here with an introductory biography of the author.