Another manere to knowe the mene mote.
Whan thou wolt make the mene mote of eny planete to be by
Arsechieles tables, tak thy rote, the which is for the yer of
oure Lord 1397; and if so be that thy yer be passid the date,
wryt that date, and than wryt the nomber of the yeres. Than
withdraw the yeres
out of the yeres that ben passed
that rote. Ensampul as thus: the yer of oure Lord 1400, I wolde
wyten, precise, my rote; than wrot I first 1400. And under that
nomber I wrot a 1397; than withdrow I the laste nomber out of
that, and than fond I the residue was 3 yer; I wiste that 3 yer
was passed fro the rote, the which was writen in my tables. Than
afterward soghte I in my tables the
annis
collectis et expansis-->, and among myn expanse yeres fond I 3 yeer. Than tok
I alle the signes, degrees, and minutes, that I fond direct under
the same planete that I wroghte for, and wrot so many signes,
degrees, and minutes in my slate, and afterward added I to
signes, degrees, minutes, and secoundes, the whiche I fond in my
rote the yer of oure Lord 1397; and kepte the residue; and than
had I the mene mote for the laste day of December. And if thou
woldest wete the mene mote of any planete in March, April, or
May, other in any other tyme or moneth of the yer, loke how many
monethes and dayes ben passed from the laste day of December, the
yer of oure Lord 1400; and so with monethis and dayes enter into
thy table ther thou findest thy mene mote iwriten in monethes and
dayes, and tak alle the signes, degrees, minutes, and secoundes
that thou findest ywrite in direct of thy monethes, and adde to
signes, degrees, minutes, and secoundes that thou findest with
thy rote the yer of oure Lord 1400, and the residue that leveth
is the mene mote for that same day. And note, if hit so he that
thou woldest wite the mene mote in any yer that is lasse than thy
rote, withdraw the nomber of so many yeres as hit is lasse than
the yer of oure Lord a 1397, and kep the residue; and so many
yeres, monethes, and dayes enter into thy tables of thy mene
mote. And tak alle the signes, degrees, and minutes, and
secoundes, that thou findest in direct of alle the yeres,
monethes, and dayes, and wryt hem in thy slate; and so above
thilke nomber wryt the signes, degrees, minutes, and secoundes,
the which thou findest with thy rote the yer of oure Lord a 1397;
and withdraw alle the nethere signes and degrees fro the signes
and degrees, minutes, and secoundes of other signes with thy
rote; and thy residue that leveth is thy mene mote for that
day.
