for the first time in weeks - it felt like years - he was able to look at a geography different from that of his room with its unchanging verities - blue wallpaper , picture of the arc de triomphe , the long , long month of february symbolized by the boy sliding downhill on his sled ( he thought that his mind would turn to that boy 's face and stocking cap each time january became february , even if he lived to see that change of months another fifty times ) .