wrote that the exhibition was ahead of anything else in Paris. There, Bernard and Anquetin sold their first paintings, and Van Gogh exchanged work with Gauguin. Discussions on art, artists, and their social situations started during this exhibition, continued and expanded to include visitors to the show, like Camille Pissarro and his son Lucien, Signac and Seurat. In February 1888, feeling worn out from life in Paris, Van Gogh left, having painted more than 200 paintings during his two years there. Hours before his departure, accompanied by Theo, he paid his first and only visit to Seurat in his studio. Artistic breakthrough Arles (1888–89) Ill from drink and suffering from smoker's cough, in February 1888 Van Gogh sought refuge in Arles. He seems to have moved with thoughts of founding an art colony. The Danish artist Christian Mourier-Petersen became his companion for two months, and, at first, Arles appeared exotic. In a letter, he described it as a foreign country: "The Zouaves, the brothels, the adorable little Arlésienne going to her First Communion, the priest in his surplice, who looks like a dangerous rhinoceros, the people drinking absinthe, all seem to me creatures from another world." The time in Arles became one of Van Gogh's more prolific periods: he completed 200 paintings and more than 100 drawings and watercolours. He was enchanted by the local countryside and light; his works from this period are rich in yellow, ultramarine and mauve. They include harvests, wheat fields and general rural landmarks from the area, including The Old Mill (1888), one of seven canvases sent to Pont-Aven on 4 October 1888 in an exchange of works with Paul Gauguin, Émile Bernard, Charles Laval and others. The portrayals of Arles are informed by his Dutch upbringing; the patchworks of fields and avenues are flat and lacking perspective, but excel in their use of colour. In March 1888 he painted landscapes using a gridded "perspective frame"; three of the works were shown at the annual exhibition of the Société des Artistes Indépendants. In April, he was visited by the American artist Dodge MacKnight, who was living nearby at Fontvieille. On 1 May 1888, for 15 francs per month, he signed a lease for the eastern wing of the Yellow House at 2 place Lamartine. The rooms were unfurnished and had been uninhabited for months. On 7 May, Van Gogh moved from the Hôtel Carrel to