[604] For the first of these the reader is referred to the forms ascribed to Boethius, in the illustration on p. 88; for the second, to Radulph of Laon, see p. 60. The third is used occasionally in the Rollandus (1424) manuscript, in Mr. Plimpton's library. The remaining three are from Cappelli, fourteenth (2) and seventeenth centuries. [605] Smith, _An Early English Algorism_. [606] Kuckuck, p. 5. [607] A. Cappelli, loc. cit., p. 372. [608] Smith, _Rara Arithmetica_, p. 443. [609] Curtze, _Petri Philomeni de Dacia_ etc., p. IX. [610] Cappelli, loc. cit., p. 376. [611] Curtze, loc. cit., pp. VIII-IX, note. [612] Edition of 1544-1545, f. 52. [613] _De numeris libri II_, 1544 ed., cap. XV. Heilbronner, loc. cit., p. 736, also gives them, and compares this with other systems. [614] Noviomagus says of them: "De quibusdam Astrologicis, sive Chaldaicis numerorum notis.... Sunt & aliae quaedam notae, quibus Chaldaei & Astrologii quemlibet numerum artificiose & argute describunt, scitu periucundae, quas nobis communicauit Rodolphus Paludanus Nouiomagus."