American Modern: Hopper to O'Keeffe, is a show in search of a purpose. Had it been given more careful curatorial consideration the exhibition could have been one of the most important of the year. Disappointingly, it falls short.
Given the abundance of great exhibitions it's not surprising that there were plenty of excellent painting posts in September. Ten fantastic posts are below, and you can find more daily at Painters' Table, the magazine of the painting blogosphere.