I've re-read them 3 times, and each time, I was reminded of my feelings when fall settled when I lived in the northern U.S.: The first biddings of fall were of beauty - colorful leaves, crisp air, clear days - soon to be followed by grey days , bare trees, frigid temperatures and eventually snow! I am not one who relishes either cold weather or bare trees. Thus, I was left with a feeling of melancholy. It also reminds me of aging, where there are fewer days ahead than behind and yet so many ideas and projects that will be "pressed between the pages of thick, obscure volumes and forgotten."
I am left with a strong sense of loneliness, perhaps not what you intended but what these poems evoked in me.
Beautiful writing!