(1) **Ile** /3 **c** **Tou** **irvpiov**, **On** **the** **Burning-Glass**, **where** **the** **focal** **properties** **of** **the** **parabola** **probably** **found** **a** **place**; (2) **Hepi** **On** **the** **Cylindrical** **Helix** (**mentioned** **by** **Proclus**); (3) **a** **comparison** **of** **the** **dodecahedron** **and** **the** **icosahedron** **inscribed** **in** **the** **same** **sphere**; (4) `**H** Ka06Xov **lrpa-y**µ**areta**, **perhaps** **a** **work** **on** **the** **general** **principles** **of** **mathematics** **in** **which** **were** **included** **Apollonius**' **criticisms** **and** **suggestions** **for** **the** **improvement** **of** **Euclid'****s** **Elements**; (5) ' (**quick** **bringing-to-birth**), **in** **which**, **according** **to** **Eutocius**, **he** **showed** **how** **to** **find** **closer** **limits** **for** **the** **value** **of** 7r **than** **the** 37 **and** 3,4**-A** **of** **Archimedes**; (6) **an** **arithmetical** **work** (**as** **to** **which** **see** **Pappus**) **on** **a** **system** **of** **expressing** **large** **numbers** **in** **language** **closer** **to** **that** **of** **common** **life** **than** **that** **of** **Archimedes**' **Sand-reckoner**, **and** **showing** **how** **to** **multiply** **such** **large** **numbers**; (7) **a** **great** **extension** **of** **the** **theory** **of** **irrationals** **expounded** **in** **Euclid**, **Book** **x**., **from** **binomial** **to** **multinomial** **and** **from** **ordered** **to** **unordered** **irrationals** (**see** **extracts** **from** **Pappus**' **comm**.