Page:The Algebra of Mohammed Ben Musa (1831).djvu/208

 says he, hanc secundam demonstrationem aliter quam a explicatam, nam ille immutata figura magis ex re ostendit, sed tamem obscurius, nec nisi unam partem eamque pluribus.

The words from والا سدسا في to وسدس السدس are write ten twice over in the manuscript.

جذر مال معلوم او اصم] “The root of a rational or irrational number.” In the Kholāset al Hisāb, p. 128. 137. 369, the expression منطق (lit. audible) is used instead of معلوم, which stands in a more distinct opposition to اصم (lit. inaudible, surd). applies the same expressions also to fractions, calling منطق those for which there are peculiar expressions in Arabic, e.g. ثلث one-third, and اصم those which must be expressed periphrastically by means of the word جزء a part, e.g. من خمسة وعشرين ثلثة اجزاء three twenty-fifths. See Kholāset al Hisāb, p. 150.

The manuscript has مثلي ذلك المال. The context requires the insertion of جذر after مثلي, which I have added from conjecture.

ما يصيب الواحد] “What is proportionate to the unit,”