Crickets

"a lone winter evening, when the frost/ Has wrought a silence, from the stove there shrills/The Cricket's song, in warmth increasing ever," even in the winter, the "poetry of earth" does not stop. The last two lines of the poem seem to be contrasting the cold drowsy winter cricket to the grasshopper "among some grassy hills." The author is saying that poetry of earth continues through the cycle of seasons, never ceasing.