Arthur with a lighted taper
Touched the fire to granpa's paper.
Grandpa leaped a foot or higher,
Dropped the sheet and shouted, "Fire!"
Arthur, wrapped in contemplation,
Viewed the scene of conflagration.
"This," he said, "confirms my notion-
Heat creates both light and motion."
---
Wee, experimental Nina
Dropped her mother's Dresden china
From a seventh-storey casement,
Smashing, crashing to the basement.
Nina, somewhat apprehensive,
Said, "This china is expensive,
Yet it proves by demonstration
Newton's law of gravitation."