“As surgeons have reason to know, persons vary widely in their sensitiveness to pain. I have seen a man chat quietly with bystanders while his carotid artery was being tied without the use of chloroform. During the Russo-Turkish war wounded Turks often astonished English doctors by undergoing the most formidable amputations with no other anaesthetic than a cigarette. Hysterical women will inflict very severe pain on themselves—merely for wantonness or in order to excite sympathy. The fakirs who allow themselves to be hung up by hooks beneath their shoulder-blades seem to think little of it and, as a matter of fact, I believe are not much inconvenienced by the process.” The fact is, the amateur can always be deceived, and there are no special tests that can be relied on. If a person is well accustomed to hypnotic manifestations, and also a good judge of human nature, and will keep constantly on guard, using every precaution to avoid deception, it is altogether likely that it can be entirely obviated. But one must use his good judgment in every possible way. In the case of fresh subjects, or persons well known, of course there is little possibility of deception. And the fact that deception exists does not in any way invalidate the truth of hypnotism as a scientific phenomenon. We cite it merely as one of the physiological peculiarities connected with the mental condition of which it is a manifestation. The fact that a tendency to deception exists is interesting in itself, and may have an influence upon our judgment of our fellow beings. There is, to be sure, a tendency on the part of scientific writers to find lunatics instead of criminals; but knowledge of the well demonstrated fact that many criminals are insane helps to make us charitable. CHAPTER VII. Criminal Suggestion.—Laboratory Crimes.—Dr. Cocke’s Experiments Showing Criminal Suggestion Is not Possible.—Dr. William James’ Theory.—A Bad Man Cannot Be Made Good, Why Expect to Make a Good Man Bad?