This volume contains the Greek text, textual apparatus, and first published English translation of two treatises on rhetoric, with introductory material and notes. Once attributed to Hermogenes of Tarsus, these treatises are now believed to be by unknown authors writing in the second or third century C.E. or later. The first treatise, entitled On Invention, is a handbook for students providing formulas to aid them in the composition of declamations on assigned themes. The second treatise, On the Method of Forcefulness, discusses prose style with special attention to figures of speech. Extensive notes interpret the often-difficult content and relate it to other writing on rhetoric. The Greek text is that of Hugo Rabe (1913).