Source identified1
“The morns are meeker than they were, The nuts are getting brown; The berry's cheek is plumper, The rose is out of town.”
Small changes in morning, nuts, berries and roses make the season legible through close observation rather than through an abstract announcement that autumn has arrived.
Source note: “Autumn,” Poems: First Series (1890), Project Gutenberg #12242. The title and punctuation follow the represented early printed edition rather than a modern manuscript-based Dickinson edition.