Mauve took Van Gogh on as a student and introduced him to watercolour, which he worked on for the next month before returning home for Christmas. He quarrelled with his father, refusing to attend church, and left for The Hague.[note 5] Within a month Van Gogh and Mauve fell out, possibly over the viability of drawing from plaster casts. Van Gogh could afford to hire only people from the street as models, a practice of which Mauve seems to have disapproved. In June Van Gogh suffered a bout of gonorrhoea and spent three weeks in hospital. Soon after, he first painted in oils, bought with money borrowed from Theo. He liked the medium, and spread the paint liberally, scraping from the canvas and working back with the brush. He wrote that he was surprised at how good the results were.
Van Gogh made several painting excursions during visits to the landscape around Arles. He made paintings of harvests, wheat fields and other rural landmarks of the area, including The Old Mill (1888); a good example of a picturesque structure bordering the wheat fields beyond. At various points, Van Gogh painted the view from his window – at The Hague, Antwerp, and Paris. These works culminated in The Wheat Field series, which depicted the view from his cells in the asylum at Saint-Rémy.
Van Dyke left high school in 1944, his senior year, intending to join the United States Army Air Forces for pilot training during World War II. Denied enlistment several times for being underweight, he was eventually accepted for service as a radio announcer before transferring to the Special Services and entertaining troops in the continental United States. He received his high school diploma in 2004 at the age of 78.