How beautiful is the following description of the waterfall at Brienz Lake: "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 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." At length, on September 29th, the small party reach London again, and Faraday's journal ends thus:--"Crossing the new London Bridge street we saw M.'s pleasant face, and shook hands; and though we separated in a moment or two, still we feel and know we are where we ought to be--at home." Faraday's allusion to his father in the extract above is very pleasing and interesting. We are told that he used to like to pay visits to the scenes of his boyhood and youth, and that he once went to the shop where his father had formerly been employed as a blacksmith, and asked to be allowed to look over the place. When he got to a part of the premises at which there was an opening into the lower workshop, he stopped and said, "I very nearly lost my life there once. I was playing in the upper room at pitching halfpence into a pint pot close by this hole, and having succeeded at a certain distance, I stepped back to try my fortune further off, forgetting the aperture, and down I fell; and if it had not been that my father was working over an anvil fixed just below, I should have fallen on it, broken my back, and probably killed myself. As it was, my father's back just saved mine." On his return from his Swiss trip, Faraday took up a great part of his work again, and was fully occupied with a few electrical experiments, lectures, and Trinity House work. What has been termed his second great period of research did not commence until 1845. He lectured frequently at the Institution--so frequently indeed that we cannot refer to them here, but must leave them to the chapter on his lectures. Indeed, merely to detail the work which Faraday did would take up considerably more than the whole space of this little book.