1960, William Turner Levy, William Barnes: the man and the poems:When the sun sinks below the skysill (his word for horizon) there is most often in England the gloom of mistiness.
1992, International Poetry Society, Orbis: Issues 84-87:Rooftops stagger the skysill. Clouds coast from nowhere to Nowhere as row upon row below Planetrees shuttle the moted Air.
1995, Kim Stanley Robinson, Green mars:They first appeared as two bumps rolling over the skysill, which quickly proved to be the connected outer points of a low ridge.
