It was the picture of horses by George Stubbs, best known for his anatomically correct studies of the animals, which made the greatest impression.

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Earlier this week a temporary export bar was placed on two works by George Stubbs that gave the 18th Century British public their first chance to see what a kangaroo and a dingo looked like.

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In each stride horses lift all four hooves off the ground at once, something that George Stubbs, the most famous horse painter of the last 300 years, had guessed at but which, until Muybridge, had never been proved.

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