Would you mind showing me those bits of candle-grease you picked up in the bedroom ?" Superintendent Galloway produced a metal match-box from his pocket, emptied some pieces of candle-grease, a burnt wooden match and a broken matchhead from it, and sat back eyeing the detective with a supercilious smile.

Colwyn, after examining them closely, brought from his own pocket an envelope, and shook several more pieces of candle-grease on the table.
"Look at these pieces of candle-grease side by side," he said.

"Yours were picked up alongside the bed; I found mine underneath the gas burner." Superintendent Galloway glanced at the pieces of candle-grease with the same supercilious smile.

"I see them," he said.

"They are pieces of candle-grease.