Gazette: Lectures

National Gallery: Colin Wiggins, "Friday Focus: Rembrandt, Portraits of Jacob Trip and Margaretha de Geer", 1.15pm.

Tate Gallery: Justine Hopkins, "Voyages Out: Virginia and Vanessa, writing and painting", 1pm.

British Museum: Mike Cowell, "Science and Technology of Money", 11.15am.

Wallace Collection, London W1: Ashok Roy, "The Artist's Method: Van Dyck's technique and studio practice", 1pm.