Editing Spirometer (section)

===Early development===
The earliest attempt to measure lung volume can be dated back to the period A.D. 129–200.  [[Galen|Claudius Galen]], a Roman physician and philosopher, did a volumetric experiment on human ventilation. He had a child breathe in and out of a bladder and found that the volume did not change. The experiment proved inconclusive.

* 1681, [[Giovanni Alfonso Borelli]] tried to measure the volume of air inspired in one breath. He assembled a cylindrical tube partially filled with water, with an open water source entering the bottom of the cylinder. He occluded his nostrils, inhaled through an outlet at the top of the cylinder and measured the volume of air displaced by water. Nowadays, this technique is very important in determining parameters of lung volume.