Litell [Lowis] my sone, I have perceived wel by certeyne
evidences thyn abilite to lerne sciencez touchinge noumbres
and proporciouns; and as wel considere I thy bisy preyere in
special to lerne the Tretis of the Astrolabie. Than, for as mechel
5
as a [philosofre] seith, 'he wrappeth him in his frend, that condescendeth
to the rightful preyers of his frend,' ther-for have I
geven thee a [suffisaunt] Astrolabie as for oure orizonte, compowned
after the latitude of Oxenford; up-on which, by mediacion of this
litel tretis, I purpose to teche thee a certein nombre of conclusions