§

 1 17|   of this world. ~As thus: -Yif it be of the sonne or of
 2 20|     his declinacyoun north; yif it be southward, than is
 3 1 |           41. Umbra Recta. ~Yif it so be that thou wilt
 4 1 |     poynt of oon to 12. And yif thy rewle falle upon 5,
 5 2 |   werkinge, by umbra versa. Yif so be that thou may nat
 6 2 |    tour. For other poyntis, yif it fille in umbra versa,
 7 2 |    heyghte of the tour. And yif the differens were thryes,
 8 2 | thou werke fro 2 to 12; and yif it be 4, 4 tymes; or 5,
 9 3 |    wyrking, by umbra recta. Yif it so be that thou mayst
10 3 |   altitude of the tour. And yif ther were 2, it were the
11 3 |   it were the 6 partye; and yif ther were 3, the 4 partye;
12 3 |     sic deinceps. And note, yif it were 5, it were the 5