Hoffmann, Professor, 1839-1919 · London : Frederick Warne · leaf 53
through glass balls (usually six) onthe one side, and through a like number of bone rings on theother. (See Fig. 42.) The puzzle is to reverse the balls andrings—i.e., to bring the balls into the place of the rings, andvice versa. 3° Puzzles Old and New. No. XVII.—The Chinese Ladder. This is a… … Fig. 43. boles in it. A silken cord, a yard in length, secured attop with a knot and glass bead, is threaded through eachhole in succession (down one side and up the other). Be-tween each pair of holes it is also threaded through a holein a bone counter, so that there are two counters in…
Puzzles
Internet Archive · Boston Public Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Albumasar, De magnis [con]iunctionibus, anno[rum] reuolutio[n]ibus, ac eo[rum] profectionibus octo [con]tines tractatus (1515)](https://img.insideoutlibrary.com/img/200/ia-albumasardemagni00abum-66-57.webp)
