"ars 69 (tit) Mathematicalis familiaris epistola. ... Sinonima Mathematicalia (allg. 'die berechnenden Wissenschaften betreffend', vgl. die Synonyme ibid. Ary[s]thmeticus, ... Astronomus, ... Geometer, ... Musicus ..., Ab hoc possumus futuros accipere rerum euentus)." . "ars 69 (tit) Mathema..." . .