RodiRoadie

I'm trying to find a song with the lyrics: "...enamel clocks are ticking. Why?" and "...the number of fireflies that light up the highway at night and make all the piney woods bright out in the county" I'm pretty sure it's by Roy Harper. But I've been doing Internet searches off and on for years with any number of combinations, with no luck. Anyone know the name of this song? .