Stubbs leaned into the space between axle-support and drum-side and unlatched the door. It flew open all the way and banged against the outside of the Machine, revealing that its inner surface was entirely covered by a quilted canvas bag, so filthy that it gleamed with a hard shine, stuffed with straw or horse-hair. The open hatchway was mostly empty; but down low, something reminiscent of a human figure could be seen draining lumpily onto the floor, like a half-melted wax statue being poured out of a saucepan.