III. At half-past three a single bird

At half-past three a single bird
Unto a silent sky
Propounded but a single term
Of cautious melody.

At half-past four, experiment
Had subjugated test,
And lo! her silver principle
Supplanted all the rest.

At half-past seven, element
Nor implement was seen,
And place was where the presence was,
Circumference between.