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Geoffrey Tory Ypsilon. en page of the work Champ Fleury auquel est contenu l'art et science de la deue et vraye proportio des lettres ark Geoffrey Tory Described few pages earlier Tory credits Pythagoras with the invention of the JE ne veulx icy oublier dire que Ypsilon fut jadis invente du noble Philosophe natif de l'Isle de Samos