Classic Poem

Where are they? I have never missed before
The whole wide kingdom of the cherishing leaves,
Or waft, or drifted into golden heaves
With all their scents, or dead upon the floor!
We left at sundown; but shall see no more
The air a film of multitudinous leaves;
For, lo, a sudden ravishing bereaves
The air that threaded them, the earth that bore!
And now of all their gorgeous, solemn realms
No sign: of unseen arrows came their fall;
They are not. Clematis and ivy curl
Their wavering tissues on the river wall —
Nothing afloat: the river a dark pearl;
The jagged acacia and the misted elms.