In many instances the character of the attack confines itself to the mad rushing away, as above described, at other times attempts to injure or kill others are made. For instance, a rancher of Tierra del Fuego, was in the company of some Onas when suddenly a hatchet whizzed by him, barely missing his head, and buried itself in a log of the Indian shelter. This was the result of an attack which seized upon one of the Onas who was afflicted thus from time to time. The actual outburst in this case was sudden, although it is difficult to tell how long it might have been coming on in the form of brooding, which seems to be a premonitory phase of this condition.

Concerning a personal experience with one of the early phases of an attack, Mr. Furlong states as follows:—"I am fully convinced that one night, while camping alone with Onas in the heart of the Fuegian forests, that my head man Aanakin, who had a good many killings to his credit, was brooding as he sat in his wigwam, which opened towards the fire; he watched me for nearly an hour with an attitude and expression which reminded me of the look a dog takes on sometimes before he snaps. Aanakin I knew to be of a very moody nature but this particular mood was so marked and portended evil so noticeably toward me without any apparent cause, that I decided to do something to break its mental trend. So putting fresh wood on the fire, to make a more brilliant blaze, I walked directly into his wigwam and motioned to one of his two wives, who were lying beside him. There was a passing look of half-anger, half-surprise, but I gave no time for his mind to dwell in the same mood, for simultaneously I produced my note book and pencil and began to make drawings of animals and other things they were familiar with. They like to watch one draw and name the thing, and so I kept them busy for perhaps an hour, and finally had them in gales of laughter. I am quite convinced that I forestalled an attack or a condition akin to it."

It seems that an attack usually begins suddenly. However, an instance is given where an Ona became moody and realized that one of these attacks was coming on and putting his hands together begged to have his wrists and feet bound in order that he would not do himself or others any harm, or that it would not be thought that he meant to kill and consequently be shot in self defence. This would in a way seem to indicate that there was no amnesia for the attack, as the Indian undoubtedly realized what he had done in previous attacks.

The moody state and the realization of what might follow as the attack comes on demonstrates a sense of uneasiness as the premonitory symptom of an attack, which ends in a state of utter exhaustion and sleep. The normal condition is resumed, practically on the awakening from sleep and recovery of strength.

From a description of Donald McMillan the explorer, the Eskimo Piblokto strongly resembles these attacks of the Ona and Yahgan Indians with the exception that Piblokto was particularly prevalent among the women.

How an attack begins is shown by the case of Aanakin, an Ona of Furlong's expedition. A certain form of melancholia, brooding or moodiness, seems to precede many of these attacks, with a realization sometimes that an attack is coming upon them. The Onas not being naturally a quarrelsome people, it may be that this realization and foreboding of the attack accounts for their tendency to run away from their associates, when they have endured the strain as long as they can, thus placing themselves in a position to avoid deliberate attack or injury to those about them.

It was further stated, in answer to the questionnaire—"I cannot give you absolute data regarding laughing or crying in an attack, screaming, yells, foaming at the mouth, biting of tongue, tearing of clothes, although I am of the opinion that any or all of these things may and do occur. As to violent resistance, the case, where the man wished to be bound, would show there was violent resistance, and it is probable that partly for this reason the Onas and Yahgans do not molest the afflicted except to prevent them from harming themselves, preferring to wait until the paroxysm exhausts them. I cannot state positively as to whether the attack is explained by the natives as being due to an evil spirit. While these people are polygamous, though having no religious form of worship, they usually believe when any one has a disease that something has entered them or some one who dislikes them has surreptitiously sent some small animal or an arrow into them. Among the Yahgans the 'Yuccamoosh' (doctors) or magicians proceed to pretend to extract these objects by a form of squeezing and hugging the patient, in the meantime blowing, hissing, etc., to force the object or evil out. I have never known of their doing this, however, to a person suffering from an attack.

"I am unable to supply any direct data as to the relation of love, hunger, sexuality, death of relatives or absent relatives to an attack. On the death of a relative the Yahgans go through incantations in the form of a sort of weird death chant, which they often sing in unison at certain times of the day and night. They paint their faces to show the death to strangers, but they rarely mention the name of the dead, in fact by most it is considered an offence to do so. They say simply 'He is gone,' 'He is no more'; they feel the loss of relatives very keenly and sorrow for them, and sometimes become violent with grief and rage.

"Regarding the primitive type of mental organization among these natives,—despite Darwin's first opinion of them, which was subsequently modified, I consider these people inherently intelligent, though of a very primitive type as far as their culture is concerned, probably the most primitive in this hemisphere, perhaps in the world, as the Onas are today living in the Stone Age. Dr. E. Von Hornbostel of Berlin University, who has collaborated with me in making a special study of my phonographic records of their songs, informs me that these songs are the most primitive American-Indian songs of which they have any record." Of importance for a clear understanding of the mental traits of these Indian tribes, as the source from which these attacks develop, are the study of their dreams, their system of taboos and their myths. So far as could be determined from the data supplied, the dreams of these primitive races strongly resemble the dreams of children, as these aboriginal tribes possess many childlike attributes. In fact up to a certain age the civilized child is really a little savage, with his strong egotism and feelings of rivalry, his taboos, his jealousies and his few or no altruistic tendencies. In the child as in the savage, the wish and the thought are synonymous, both want their desires immediately gratified, although such gratification may be impossible in reality. The dreams of the Yahgan Indians are simple wish fulfilments, without disguise or elaboration, like the dreams of a civilized child.

The Yahgan attitude toward death is the same as that of many primitive races. Any reference to death is strongly tabooed amongst them and to transgress this taboo, exposes the individual to grave danger and severe punishment, even the punishment of the thing tabooed. Thus the person who transgresses this taboo becomes himself taboo by arousing the anger or resentment of other members of the tribe. However, a certain ambivalent tendency seems to be present, for while the word death and the mention of the dead is prohibited, yet they feel deep grief and sorrow for dead relatives. Transgression of the taboo may arouse the other aspect of the ambivalent attitude, (for instance anger instead of sorrow) and it thus becomes a source of danger to the guilty individual and so by contagion and imitation to the community. This ambivalent tendency which leads to taboos is prominent among primitive races as well as in civilized children for instance, in the latter, the taboo of pronouncing certain words which leads to stammering or the taboo of objects possessing a sexual significance in producing kleptomania. As civilization and cultural advancement increase or as the child becomes the adult, the taboo tendency gradually declines, yet under certain conditions it may manifest itself as a psychoneurotic symptom. Since these particular primitive races have no conception of immortality, this taboo cannot be a religious or a moral obligation or prohibition, but a social phenomenon for the benefit of the tribe or for the physical welfare of the individuals comprising the tribe. Freud also has pointed out how the avoidence of the names of the dead because of fear of offence to the living is found among certain South American tribes.