Of Chalybean temper, agile, lithe,
And swifter than the roe; his ample chest
Was overbrow'd by a gigantic head,
With eyes keen, deeply sunk, and small, that gleam'd
Strangely in wrath as though some spirit unclean
Within that corporal tenement install'd
Look'd from its windows, but with temper'd fire
Beam'd mildly on the unresisting. Thin
His beard and hoary; his flat nostrils crown'd
A cicatrized, swart visage; but, withal,