Grocott & Ward, comps. Grocott’s Familiar Quotations, 6th ed. 189-?.

Glow-worm

The glow-worm shows the matin to be near
And ’gins to pale his ineffectual fire.
Shakespeare.—Hamlet, Act I. Scene 5. (The Ghost to Hamlet.)

Reading his breviary by the light of a glow-worm.
Foote.—Taste, Act II.