through the air. The sun is at his back, shining on the drifting
spray, and he thus describes and muses on what he sees:--

'August 12, 1841.--To-day every fall was foaming from the abundance
of water, and the current of wind brought down by it was in some
places too strong to stand against. The sun shone brightly, and the
rainbows seen from various points were very beautiful. One at the
bottom of a fine but furious fall was very pleasant,--there it
remained motionless, whilst the gusts and clouds of spray swept
furiously across its place and were dashed against the rock.
It looked like a spirit strong in faith and steadfast in the midst
of the storm of passions sweeping across it, and though it might
fade and revive, still it held on to the rock as in hope and giving
hope. And the very drops, which in the whirlwind of their fury
seemed as if they would carry all away, were made to revive it and
give it greater beauty.'

Footnote to Chapter 9

[1] See note, p. 77.


Chapter 10.

Magnetization of light.

But we must quit the man and go on to the discoverer: we shall
return for a brief space to his company by-and-by. Carry your
thoughts back to his last experiments, and see him endeavouring to
prove that induction is due to the action of contiguous particles.