"I am trying to recollect what it looked like, before lath and plaster were put up. I phant’sy that behind these surfaces are large cavities—particularly—if memory serves— here, between where the chimney is hidden as it pierces the roof, and the corner. There are four chimneys—hence, four such cavities." Daniel had been dragging a hand along the plaster as he spoke, occasionally thumping with his knuckles. He’d stopped at a place, near the corner, where it answered with an especially resonant boom. Without allowing his hand to move, he turned round now to scan the other three corners. His gaze lit on one that was stained with fresh plaster. Then—fortuitously—he noticed that Timothy Stubbs had finally caught up with them.