To half mankind, a further task ensues;
How best to mitigate these fell extreams,
How breathe unhurt the withering element, 190
Or hazy atmosphere: Tho’ custom moulds
To every clime the soft Promethean clay;
And he who first the fogs of Essex breath’d
(So kind is native air) may in the fens
Of Essex from inveterate ills revive 195
At pure Montpelier or Bermuda caught.
But if the raw and oozy heaven offend,