To vanish, fleeting as the phantom train;
Ever invisible to earthly eye,
Yet known to each one most familiarly.—F. Metcalfe.
Eubulus. (Book x. § 71, p. 710.)
A. What is it that, while young, is plump and heavy,
But, being full grown, is light, and wingless mounts
Upon the courier winds, and foils the sight?
B. The Thistle's Beard; for this at first sticks fast
To the green seed, which, ripe and dry, falls off