These are among the marvellous pictures in this exhibition, and in many lesser-known paintings, subtle, instructive and, indeed, invaluable insights are to be had, but I am far from certain that the relationships of French and British painters between 1820 and 1840 were in any visual way fruitful - how could they be if Delacroix, the best of the French, could describe Benjamin Robert Haydon, by far the worst of the British (thank the Lord for his suicide), as "a very great painter. In effect, the exhibition, in comparing and contrasting, proves the opposite of its underlying thesis - but it is none the worse for that. Anyone whose appetite for French Romanticism has been tickled, should read Anita Brookner's Romanticism and its Discontents(Viking, 2000) - pointed and exquisite perceptions gathered in brief essays, wry and finely wrought.