HUG 3, ff. 093r-v, inc. Paraboloides voco curvas in quibus
Incipit:Paraboloides voco curvas in quibus
Part of a preliminary draft of a report to the Académie. Only the first line of text is edited, but one section is carried over to the final draft, HUG 25, f. 58v, and hence is very similar to the passage at the bottom of p.257.