Madam, - With reference to the photograph of a visitor sliding through the Höller giant tubes at the Tate Modern in London (An Irishman's Diary, October 12th) - surely it is Santa Claus (in full Yuletide rig), no doubt getting in some early chimney-negotiations practice? - Yours, etc,
PATRICIA DALY, Home Farm Road, Drumcondra, Dublin 9.