The mercury did fall yesterday, but not by that much.
Adilabad shivered as the mercury fell to 4C, down from 15C last week.
In winter the mercury often falls near to zero degree celcius.
Oh yes, and the mercury never falls below 25C and rarely rises above 35C.
The mercury in the porch thermometer fell lower.
That is, he bragged about it until last winter, when it was killed back to its roots after the mercury fell to 38 below.
About midnight the mercury fell to zero, and soon after a gale rose, which lasted for ten hours.
Then the mercury fell below zero, and everything froze.
The approaching storm had knocked at least twenty degrees off the thermometer and the mercury was still falling.
The album begins and ends with the words "mercury falling".