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His wife is seated blindfolded, with her back to the auditorium. While in this position she gives an exhibition of mystifying mental mathematics. She squares 309, besides squaring and cubing 89, both numbers suggested by an auditor.
Konorah lays too much stress upon the absence of collusion, and Mrs. Konorah has an unpleasant manner of intonation while speaking, giving the impression of affectation. The act is interesting, and the seemingly marvellous mental arithmetic performed by Mrs. Konorah brought solid applause.
Source:
Variety 9:1 (09/07/1907)