78/2455 [Mathematics]. Anonymous (late 17th cent.). (Mathematical manuscript). N.pl., n.d., p.3-80[= 81],(1)p., pen and ink on paper, contemp. vellum.

- Lacks the first leaf; 2 leaves loose and frayed; several leaves at the lacking. Vellum used.

= Nearly written manuscript, possibly a teacher's handbook, dealing with i.a. the following subjects: "Multiplicatio", "Additio in gelde", "Oeffening der specien", "Den regel van Drieën", and "Den regel van drieën gebroken". The "Oeffening der specien" contains i.a. the following excercise: "12 van de vermaarde stad. 1 stad | 25 strate x 50= 1250 Huisen x3= 3750 Kamers x2= 7500 Dogters x2= 15000 jongmans".