When Memory is full — Memory Verse

When Memory is full ¹
Put on the perfect Lid－
This Morning's finest syllable
Presumptuous Evening said－

(F.1301/J.1266)

[1] Memory:: memory verse, a verse being memorized for reciting. Memory is full:: is memorized.
[2] Put, Lid:: close the eyes.
[3] finest syllable:: a fair verse.
[4] Presumptuous, said:: recited, said without thinking.