The first thing a Mountie thinks of is - his horse. That's why Constable Biensch, who arrived recently with a detachment of the Royal Canadian Mounts Police, was at the Royal Victoria Docks (London) yesterday, to welcome his horse, Sandra, and take her straight to the nearest patch of grass. Forty-six horses had just arrived in the liner Beaverburn, with ten men who will ride in the Coronation. May 13, 1953.