Wait a bit! ...

It was the night ...

of course, yes ...

It was the night when Carlotta--you know, Mr.
Commissary--gave her famous 'co-ack'!" "Really?
The night when Carlotta gave her famous 'co-ack' ?" And M.Mifroid, replacing his gleaming glasses on his nose, fixed the stage-manager with a contemplative stare.
"So Mauclair takes snuff, does he ?" he asked carelessly.
"'Yes, Mr.Commissary ...

Look, there is his snuff-box on that little shelf ...