On the Latin Language, Vol. I

Leonhard Spengel, edition of the De Lingua Latina On the Latin Language (1826), pages v-xviii.
K. O. Mueller, edition (1833), pages xii-xxxi.
Andreas Spengel, edition (1885), pages ii-xxviii.
Giulio Antonibon, Supplemento di Lezioni Varianti ai libri di lingua Latina Supplement of Variant Readings for the Books of the Latin Language (1899), pages 10-23.
G. Goetz et F. Schoell, edition (1910), pages xi-xxxv.

THE LAURENTIAN MANUSCRIPT F

Manuscript F contains all the extant continuous text of the De Lingua Latina, except v. 119 trua quod ladle which to vi. 61 dicendo finit ends by saying; this was contained in the second quaternion, now lost, but still in place when the other manuscripts were copied from it, and when Victorius and Diacetius collated it in 1521. There are a number of important lacunae, apart from omitted lines or single words; these are due to losses in its archetype.

Leonhard Spengel,original: "Über die Kritik der Varronischen Bücher de Lingua Latina," pp. 5-12. from the notations in the manuscript and the amount of text between the gaps, calculated that the archetype of F consisted of 16 quaternions, with these losses:

Quaternion 4 lacked folios 4 and 5, the gap after v. 162.

Quaternion 7 lacked folio 2, the end of vi. and the beginning of vii., and folio 7, the gap after vii. 23.

Quaternion 11 was missing entire, the end of viii. and the beginning of ix.

Quaternion 15 lacked folios 1 to 3, the gap after x. 23, and folios 6 to 8, the gap after x. 34.

The amount of text lost at each point can be calculated from the fact that one folio of the archetype held about 50 lines of our text.