_Fol. 1, blank._ _Fol. 2^a_: Prohemye. [G]Rete thankynges lawde & honoure we merytoryously ben bounde to yelde and offre vnto wryters of hystoryes, whiche gretely haue prouffyted oure mortal lyf, that shewe vnto the reders and herers by the ensamples of thynges passyd, what thynge is to be desyred. [Fol. 4-20, alphabetical table; 21, blank; 22-24, dialogue between the Clerke and the Lorde on translation, Trevisa's epistle to Lord Berkeley; 25, blank.] _Fol. 26^a_: Prolicionycion. Prefacio prima ad historiam. [A]Fter solempne and wyse wryters of Arte and of scyence.... _Fol. 389^b_: God be thanked of al his dedes. This translacion is ended on a thursdaye the eyghtenth daye of Apryll the yere of our lord a thousand thre hondred and .lvij. The xxxj yere of Kyng Edward the thyrd after the Conquest of Englond, the yere of my lordes age Syr thomas lord of berkley that made me make this translacion fyue and thyrtty. [390^a, Caxton's epilogue to Trevisa; 390^b, blank.] _Fol. 391^a_: Jncipit Liber vltimus. _Fol. 449^a_: Ended the second day of Juyll the xxij yere of the regne of kynge Edward the fourth & of the Incarnacion of oure lord a thousand foure score and tweyne. Fynysshed per Caxton. _Fol. 449^b, 450, blank._ Folio. Sign. a-b^8, C^4, 1-28^8, [28*^2], 29-48^8, 49^4, 50^8, 52-55^8, 450 leaves, of which five (a, 1; 1, 1; 1, 5; 28*,2; 55, 8) are blank. The folios of sign. 1,2-55,7 are numbered 1-ccccxxviii (blanks 1, 5 and 28*,2 counted as iv and ccxxvi), with many errors which are mostly corrected on the following leaves, but in the case of fol. ccxli on the verso of the same leaf. There is, however, no clx, and ccccxiii is duplicated, errors which balance each other and do not disturb the final numeration. The omission of a signature 51 is accidental, the text continuing without a break. The purpose of the unsigned single sheet following sign. 28, consisting of one printed and one blank leaf, was evidently to carry the last remaining leaf of the fourth book and thereby make possible a division of the volume at this point into two nearly equal parts. Advantage has apparently been taken of this division to bind the Grenville copy (Brit. Mus. IB. 55060) in two volumes. Wynkyn de Worde, who reprinted the Polychronicon in 1495, followed in this particular Caxton's example and in order to begin the fifth book with a new signature left at the end of the fourth book nearly a whole leaf blank, though he separated the other books by a blank space of no more than three or four lines. Caxton's use of arabic figures for signatures was confined to the years 1481-1483; after that date he used letters only. The first few chapter-headings of each book have Latin ordinals (Capitulum primum, secundum, etc.) which are soon dropped for arabic figures. Gothic letter, Caxton's fourth font, forty lines to the page, with headline. Two- to