damp

Ere twice in murk and occidental damp

Moist Hesperus hath quench’d his sleepy lamp,

Night […] with black air / Accompanied, with damps and dreadful gloom.

Ev’n now, while thus I stand blest in thy Presence,

A secret Damp of Grief comes o’er my Thoughts,

There are sulphurous Vapours which infect the Vegetables, and render the Grass unwholsom to the Cattle that feed upon it: Miners are often hurt by these Steams. Observations made in some of the Mines in Derbyshire, describe four sorts of those Damps.