What of them ?" "Do you not see that they are different kinds of candle-grease?
The pieces you picked up alongside the bed are tallow; mine, picked up from underneath the gas-globe, are wax." The Superintendent had not noticed the difference in the candle-grease, but he thought it beneath his dignity to examine them again.

"The murderer may have had two candles," he said oracularly.

"Anyway, what does it matter?
They're both candle-grease." Colwyn swept his fragments back into his pocket with a quick impatient gesture.

"Both candle-grease, as you say," he returned sharply.

"We do not seem to be making much progress in our investigations, so let us discontinue them.