By: Arthur Conan Doyle

The effect of the experiment was a world-wide one.

By: Arthur Conan Doyle

No sound has ever equalled the cry of the injured Earth.

By: Arthur Conan Doyle

“I am about to try the effect of a vigorous stimulation.”

By: Arthur Conan Doyle

It was a most extraordinary and terrifying sight.

By: Arthur Conan Doyle

I took off every stitch of my clothes.

By: Arthur Conan Doyle

I gazed down into the dreadful abyss.

By: Arthur Conan Doyle

I was in a state of considerable nervous tension.

By: Arthur Conan Doyle

‘Let the knowledge lead us where it will!’

By: Arthur Conan Doyle

‘You propose to sink a shaft through the earth’s crust?’

By: Arthur Conan Doyle

Clearly the man was a lunatic.

By: Arthur Conan Doyle

“He is a primitive cave-man in a lounge suit.”