in Thoreau’s Journal:
Going into the low sprout-land north of the Sam Wheeler orchard, where is a potato-field in new ground, I see the effects of the frost of the last two or three nights. The ferns and tall erechthites showing its pappus are dropping and blackened or imbrowned on all sides, also Eupatorium pubescens, tender young Rhus glabra, etc., and the air is full of the rank, sour smell of freshly withering vegetation. It is a great change produced in one frosty night. What a sudden period put to the reign of summer!