Found: 1930’s short story, man reads mind

I’ve been looking for this short story for years, possibly written by O. Henry. Two men, friends, walk together down a city street in silence. Finally one responds out loud to the other’s silent thought. The second man replies without thinking and then stops, amazed. The first man then walks him through how he deduced his thought patterns, by observing things they passed and movements his friend had made. This story was included in a compilation of short stories, possibly by different authors. It’s old- probably written and set in the 1930’s. I read it 25 years ago.

I think that's Edgar Allan Poe : The Murders in the Rue Morgue . Cited from WikiSource

We were strolling one night down a long dirty street in the vicinity of the Palais Royal. Being both, apparently, occupied with thought, neither of us had spoken a syllable for fifteen minutes at least. All at once Dupin broke forth with these words:
"He is a very little fellow, that's true, and would do better for the Théâtre des Variétés."

Did that ring a bell?

Yes thank you!! That’s absolutely it. I hadn’t realized it was an excerpt. Thank you so much!! Listening to it now as I work- enormously satisfying. :)

>3 twilareads: Nice. My thoughts ran like: Hmm, I've read that too. I haven't read much O. Henry, so that hint won't help. But some detective like Poirot or Holmes trying to show off his skills. Hmm, not Poirot (and Hastings), neither Holmes (and Watson), but what about Auguste Dupin? Bingo!