Behrman, in his old blue shirt, took his seat as the miner on an upturned kettle for a rock. (Para. 21)
A. Behrman wore his old blue shirt. He sat on a rock shaped like an upturned kettle, for Sue to paint.
Behrman, wearing his old blue shirt and sitting on an upturned kettle, served as Sue's model for the miner sitting on a rock.