Another point of great importance is well brought out in the experiments of John Tyndall (Phil.
The experiments of Tyndall upon precipitated clouds have been already referred to.
In order to render an 'account of Tyndall's "residual blue" it is necessary to pursue the approximation further, taking for simplicity the case of spherical shape.
Huxley, Tyndall, Cairnes, Mark Pattison, F.
John Tyndall >>