Yes; the higher the balloon ascends, the lower the quicksilver in the barometer sinks.
When we descend into the mines dug in the earth, does the air become heavier?
It does; and the quicksilver in the barometer rises.
At what temperature does water boil?
Water boils at a temperature of two hundred and twelve degrees.
When the weight of the air is taken off, will the water boil at a lower temperature?
Water will then boil at a lower temperature.
Where will water boil at the lowest temperature, on a mountain, or in a valley?
It will boil at the lowest temperature on a mountain.
At how much lower temperature will water boil, as we ascend?