The Hindu-Arabic Numerals c9.15

c9.15

⁴ Gerhardt (*Études*, p. 9) from a manuscript in the Bibliothèque Nationale. The numeral forms are 9 8 7 6 5 4 3 2 1, 20 being indicated by 2 and 200 by 2. This scheme of zero dots was also adopted by the Byzantine Greeks, for a manuscript of Planudes in the Bibliothèque Nationale has numbers like ·· (··)α for 8,100,000,000. See Gerhardt, *Études*, p. 19. Pihan, *Exposé* etc., p. 208, gives two forms, Asiatic and Maghrebian, of "Ghobār" numerals.