AT half-past three a single bird    

Unto a silent sky                   

Propounded but a single term        

Of cautious melody.                 

At half-past four, experiment       5

Had subjugated test,                

And lo! her silver principle        

Supplanted all the rest.            

At half-past seven, element         

Nor implement was seen,             10

And place was where the presence was, 

Circumference between.