When did Henry Cavendish perform the experiment that measured Earth’s density?

The English scientist Henry Cavendish performed the experiment to measure Earth’s density between 1797 and 1798.1

While the experiment is often associated with the later determination of the gravitational constant, it was originally devised by Cavendish—using an apparatus designed by John Michell—specifically to calculate the mean density of the Earth. By utilizing a torsion balance to measure the gravitational attraction between lead spheres, Cavendish determined the Earth's density to be 5.48 times that of water, a result remarkably close to the modern accepted value.12