The scoundrels may try and substitute an ugly sound for the song of birds; they cannot affect the sharp, short, and sudden cry of the swallow.

Walking up and down hill is much better than walking on the flat.  The air is forced harder through the lungs.  Windy weather is a help, and rain, for two reasons:  it is an advantage to the victim, and keeps rascals away.  The writer believes that the cartilages are influenced, or at least felt to be influenced, rather than the nerves, glands, or even the muscles.

He believes that the hearing of the voices of hypnotists is partly brought about by a change in the cartilages of the ear, which (it is stated in Grey’s anatomy) are to a certain extent disintegrated by electricity.

The ears thus become rather telephonic, and no longer dependent so entirely on the will; emotion, however, either checks this facility of sound or the weakness that permits attention.

If to this be added the repetition by various voices of the same word, the first occasion probably when the subject’s eye is seen to pass over the printed passage where it occurs in a paper, words will be brought to the victim’s ear hypnotically.

But perhaps the first system mentioned is used where the difficulties of approach are greater, the rascals must have great patience.

When the victim begins a letter the date is called to him, and then he can be tested by calling, say, July to him in September.  His name may be called when in reverie, perhaps in the country, his mind goes back to his boyhood.

Thought reading is very easy if a person is visible, and rascals begin from a distance, and finally operate between hypnotics out of sight.

They seem in this first to catch a person when he passes a window.  This shows that they are susceptible to the amount of light, as well as that a thick wall is a greater obstacle than a pane of glass.  They thus too may partly distinguish environment, though this is perhaps learned by practice.

Ear and eye and muscular feeling are all weighed.  A strong man much hypnotised in this way, will notice that a diminished light will relieve him, although previously he paid little attention to any glare, even up to the age of forty.

Residence changed from a ground floor to a lofty room would often cause unusual relief.  On a church tower this would be felt even more.

The noise of London, and the fact that people hanging about are watched, are checks to the early operations of criminal hypnotists.

Music is probably an excellent antidote.  A feeling of stupidity, given even for a second, would probably give a boy a wrong idea of himself, and even repeated successes would not quite efface this.

The Japanese system of wrestling lately introduced shows how powerful a touch on a nerve may be in weakening a man.  Such a touch transferred or propelled, may for a long time aid hypnotisers from a distance, though it would be in time disregarded or little regarded.