HUG 1, ff. 072r-82v, inc. Si aequatio octa ex intersectione curvae
Incipit:Si aequatio octa ex intersectione curvae
H1-17, then no pagination. On f. 75r, pencilled additions overwrite the original text. Preliminary work, on finding the normal to a hyperbola, for material edited in OC 20: 350-60 from HUG 11, ff. 10v-24v. Ff. 81v-82r is a revision that differs little from that edited in OC 20: 354-56. Reference to de la Hire cited in OC 20: 335 n. 5 is on f. 75r.