Frank J. Wilstach, comp. A Dictionary of Similes. 1916.

Crumble

Crumble like the chaff of a summer threshing-floor.
—John Milton

Crumbled like a house of sand.
—Ouida

Crumble like a ruined tower.
—Charles G. D. Roberts

Crumble as a crown,
Till Cæsar driven to lair and hounded Pope
Reel breathless and drop heartless out of hope.
—Algernon Charles Swinburne