Folio 13r

Sommo maestro chreator verace
per chui i cieli e terre fatti sono
eccio che inessi si chontiene et giace
concedi per tua gratia e per tuo dono
e chio possa seghuire chome ate piace
chon chiaro stile e chon aperto suono
a fighurare laterra elmare eventi
si che senabbia binoni intendimenti

Fannosi quatro plaghe per mostrare
i siti della terra e ogni parte
dalloriente verso il chorichare
si fanno cinque zone in alchunarte
e otto venti sono per navichare
i nomi principali e mezzo e quarte
questi ne fanno lume abene intendere
da qual parte lachosa dei chonprendere

Zaffiro e quello che noi diciam ponente
et choro maiestrale e achuilone
tramontana si chiama e poi seghuente
bora detto grecho euro si pone
per lo levante e noto inchontemente
scilocho anone e seghuita africhoni
chemezzo di et lultimo del chiostostro
libecco overo gherbino che si dico ostro

[the initial "S" of "Sommo" is rubricated in the first stanza: the letter is gold, inscribed in a square that is divided into two parts by the letter functioning as a diagonal. The left quadrant of the rubricated square is mauve, with some white twirls; the right quadrant is green]

[marginal illustration, to the right of the first and second stanza:
a circle, representing Earth, is divided into five vertical bands with the two outer bands in blue, the intermediate bands in beige, and the central band in red; the circle has a thin beige ring]

[marginal illustration, to the right of the second stanza:
a circle with four semicircular drawings, represents Earth and four allegorical representations of the winds, personified and sketched in profiles of human faces; two winds are to the north and south, in beige, with rays pointing downwards and upwards respectively, and two semicircular drawings to the east, in blue; west, in red; pointing westwards and eastwards respectively; the circle has a thin beige ring]

[marginal illustration, on the right lower part of the page the text:
the circle, representing Earth and its zones with twelve quadrants, is divided into zones in brown and minium; the circle has an outer, thin beige ring as the two other illustrations on this page show, too]