A theorem about this activity, which states that the quantity F plus D over quantity V plus D equals B over H, was put forth by enthusiast Claude Shannon, (15[1])who automated this activity using an Erector Set. Rubenstein’s Revenge and Mills’ Mess are among the patterns in this activity that can be represented using Siteswap notation. It’s not sword-swallowing, but the early 19th century English celebrity Ramo Samee inspired a William Hazlitt essay about this activity’s (*) “Indian” performers. Paul Cinquevalli was one of the first “gentleman” performers of this activity, who used cigars, bottles, and umbrellas in music halls. Beginners (-5[1])to this activity may learn how to perform cascades with odd numbers of props. Bowling pin-shaped clubs are used in, for 10 points, what activity, (10[1])in which multiple objects are thrown and caught continuously? ■END■