The boy's own book of indoor games and recreations : a popular encyclopædia for boys (1890)
Stables, Gordon, 1840-1910, Hutchison, George Andrew, 1841-1913 · Philadelphia : J.B. Lippincott · leaf 263
d away more brilliant than anything else inlantern practice. The essentials are a fixed slide of some bold design—star-shaped, circular,octagonal, or what not—and a moving shade that is of spiral pattern. The spiralpattern is the secret of the whole thing. Let the above be spun behind a star, soas… … Fig. 3-dense black. standing pattern must have a centre, and the spiral must be worked on the same centre. That done, all is well. Sometimes a double spiral is desirable, and then the pattern in Fig. 3 is adopted. By it the outer part of the pattern (b) will seem toflow in a different direction…
Games · Amusements
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