"Which tooth is it that aches?" my friend asked.
I pointed it out.
"The very same one that troubled Mrs. P—for several months, night and day."
"Was the pain low and throbbing?" I eagerly asked.
"Yes; that was exactly the kind of pain she had."
"And did it continue so long as several months?"
"Oh, yes. But that wasn't the worst! the aching was caused by the formation of an abscess."
"A what?" A cold chill passed over me.
"An abscess."
"At the root of her tooth?"