Beneath the title is a woodcut, 5¾ × 4⅜ in., representing a master at
his desk, with a birch in his left hand and a book in his right: above
him and on each side are other volumes, and before him five students on
a bench with their books. Two windows are in the background. On A 2^r is
a diagram of the open hand (5 × 3⅝ in.), for purposes of computation:
and different diagrams of the hand or part of it are on A 2^v, A 4^r, A
4^v.
_Copy known._
Cambridge—University Library.