A treatise on conic sections : and the application of algebra to geometry / J. Hymers. Hymers, J. (John), 1803-1887. Geometry, Analytic. QA551 .H99 516.2 HYT Cambridge : Printed at the University press, for J. & J.J. Deighton, 1845. 1845. 1845 Text iv, 228 p. : eng