It must have been October before Turner was fairly back in his studio in Hand Court, Maiden Lane, and had settled down to work up this material. By the following April he had four important oil paintings and six water-colours ready for the Exhibition. One of these oil paintings (the _Dunstanborough Castle_) now hangs in the Melbourne National Gallery, to which it was presented by the late Duke of Westminster; two others (_Winesdale, Yorkshire--an Autumnal Morning_ and _Morning amongst the Coniston Fells_) hang in the little Octagon room in Trafalgar Square, and the fourth is on loan to the Albert Memorial Museum, Exeter. This is the _Buttermere Lake, with part of Cromack Water_, a really fine painting, though it has darkened considerably. As the first important oil painting in which Turner’s genius was clearly manifested, I should rejoice to see it hanging in Trafalgar Square. The pencil drawing on which it was based contains some work in water-colour, possibly made direct from nature, but the details and general effect have been entirely recast in the finished work. Among the water-colours were the gloomy and superb _Kirkstall Abbey_, now in the Soane Museum, to which I have already referred, and the drawing of _Norham Castle_, with which we are now more particularly concerned.
The drawing exhibited in 1798 is not the one here reproduced. The exhibited drawing is probably the one now in the possession of Mr. Laundy Walters. A photographic reproduction of it was published in Sir Walter Armstrong’s “Turner” (p. 34), and it is worth pausing a moment to compare this with the original pencil sketch and to consider in exactly what relation these two drawings stand to each other.
The usual way of describing the process by which a slight sketch from nature is converted into a finished drawing is to say that the artist copied his sketch as far as it went and then relied upon his memory for the further elaboration that was required. An artist’s memory is assumed to consist of images of the scenes he has witnessed, which he has some mysterious power of storing somewhere in his mind, something like, I suppose, the undeveloped exposures in a Kodak. According to this theory we should have to assume that the particular sight of the sun rising behind Norham Towers which had greeted Turner on the morning he hurried from Berwick to Kelso had been treasured up in the inner recesses of his consciousness, and then some months afterwards, when the appropriate moment came, he had only to select this particular image from among the millions of other images in the same mysterious storehouse, to develop it and copy it on to his canvas. I need hardly add that this desperate theory is quite fanciful and absurd, and in flat contradiction to the teachings of modern psychology.