Cluedo set of cards, and a "Detective's Notes" pad on which are printed lists of rooms, weapons and characters, so players can keep detailed notes during the game. Depending on edition, the playing pieces are typically made of coloured plastic, shaped like chess pawns, or character figurines. Occasionally they are made from wood or pewter. The standard edition of Cluedo comes with six basic tokens representing these original characters: The weapon tokens are typically made out of unfinished pewter, with the exception of the rope, which may be made of plastic, metal, or string depending on edition. Special editions have included
Ethan A. Hitchcock (general) on the subject of alchemy. This collection was widely regarded as one of the finest private holdings of rare alchemical works and is preserved by St. Louis Mercantile Library at the University of Missouri-St. Louis. Through "Remarks upon Alchemy and the Alchemists" and other writings, Hitchcock argued that the alchemists were actually religious philosophers writing in symbolism. In "Problems of Mysticism and its Symbolism", the Viennese psychologist Herbert Silberer credited Hitchcock with helping to open the way for his explorations of the psychological content of alchemy. Hitchcock also played the flute and amassed a sizable collection of flute music. In