I made a couple of mistakes because I forgot to proofread it twice. What's worse is that the changes I've written aren't immediately put in the quote.
Here is the grammatically correct version of the quote:

"Aurora Borealis?" remarked Mr. Chalmers, clearly surprised at Seymore's answer, "At this time of year, at this time of day, in this part of the country, localized entirely within your kitchen?" To which Seymour responded with, "Yes." "May I see it?" "No."