Mazes and labyrinths; a general account of their history and developments (1922)
Matthews, William Henry, 1882- · London, New York, etc. Longmans, Green · leaf 298
cedis that patented by H. Bridge in 1906 and shown inFig. 148. The ball in this case is made to pass throughchannels formed between projections of labyrinthinepattern fixed to a base and others fixed to the transparenttop, which can be moved relatively to the base. The toymay be of a circular… … &*Q?rw>zr?!fo7?wm7?fozTm
Labyrinths
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