The powers and functions of the several classes of spirits do not seem to be distinctly defined. Certainly they do not confine themselves either to their recognized locality or to the usually understood function pertaining to their class. These powers and functions shade into each other, or may be assumed by members of almost any class. But it is clearly believed that spirits, even of the same class, differ in power. Some are strong, others are weak. They are limited as to the nature of their powers; no spirit can do all things. A spirit’s efficiency runs only on a certain line or lines. All of them can be influenced and made subservient to human wishes by a variety of incantations.
There are other names which, while they belong to spirits, apparently indicate only peculiarities in spiritual manifestations, and not representatives of a class.
1. There may enter into any animal’s body (generally a leopard’s) some spirit, or, temporarily, even the soul of a living human being. The animal then, guided by human intelligence and will, exercises its strength for the purposes of the temporary human possessor. Many murders are said to be committed in this way, after the manner of the mythical German wehr-wolf or the French loup-garou.
This belief in demoniacal possession of a lower animal must not be confounded with the equally believed transmigration of souls. The former is widespread over at least a third of the African continent. In Mashona-land “they believe that at times both living and dead persons can change themselves into animals, either to execute some vengeance, or to procure something they wish for; thus, a man will change himself into a hyena or a lion to steal a sheep and make a good meal off it; into a serpent to avenge himself on some enemy. At other times, if they see a serpent, it is one of the Matotela tribe or slave tribe, which has thus transformed himself to take some vengeance on the Barotse.”[27]
2. Another manifestation is that of the uvengwa. It is claimed to be not simply spiritual, but tangible. It is the self-resurrected spirit and body of a dead human being. It is an object of dread, and is never worshipped in any manner whatever. Why it appears is not known. Perhaps it shows itself only in a restless, unquiet, or dissatisfied feeling. It is white in color, but the body is variously changed from the likeness of the original human body. Some say that it has only one eye, placed in the centre of the forehead. Some say that its feet are webbed like an aquatic bird. It does not speak; it only wanders, looking as if with curiosity.
My little cottage at Batanga is a mile and a half from the three chief dwellings of the station. One afternoon in 1902 I went to the station, leaving my cook and his wife in charge of the cottage. When I returned late at night, he asserted that an uvengwa had come there. A few yards in front of the door of the house is a mango tree with its very dense dark foliage. The trunk is divided a few feet from the ground. The light from the open door streamed into a part of the front yard, leaving the tree trunk in dark shadow. The woman going out of the door had started back, screaming to her husband that she saw an uvengwa standing in the crotch of the tree and peering around one of the branches. The husband went to the door. He asserted to me that he also had seen the form. In their terror, neither of them made any investigation. Possibly a chalk-whitened thief had taken advantage of my absence to prowl about. But the two witnesses rejected such a suggestion; they were sure it was a visitor from some grave.
3. Other spiritual manifestations are spoken of as the personal guardian-spirit and the family guardian-spirit. These do not constitute a separate class, but are the special modes of operation adopted by the ancestral spirit or spirits in the protection of their family. Its description belongs properly to a later chapter under the name of the Family Yâkâ fetich.
The manner of invocation of all these five classes of spirits, in the case of obscure diseases, is very much the same now as what Dr. Wilson described fifty years ago. What he saw on the Gabun River tallies with what I also saw thirty years ago at Benita, and subsequently in the Ogowe. Even at Gabun, in the present day, though the Mpongwe have been enlightened, the same ceremonies are kept up by other tribes, the Shekani and Fang, who have emerged on the coast at Libreville.
“Sick persons, and especially those that are afflicted with nervous disorders, are supposed to be possessed by one or the other of these spirits. If the disease assumes a serious form, the patient is taken to a priest or a priestess, of either of these classes of spirits. Certain tests are applied, and it is soon ascertained to which class the disease belongs, and the patient is accordingly turned over to the proper priest. The ceremonies in the different cases are not materially different; they are alike, at least, in the employment of an almost endless round of absurd, unmeaning, and disgusting ceremonies which none but a heathenish and ignorant priesthood could invent, and none but a poor, ignorant, and superstitious people could ever tolerate.
“In either case a temporary shanty is erected in the middle of the street for the occupancy of the patient, the priest, and such persons as are to take part in the ceremony of exorcism. The time employed in performing the ceremonies is seldom less than ten or fifteen days. During this period dancing, drumming, feasting, and drinking are kept up without intermission day and night, and all at the expense of the nearest relative of the invalid. The patient, if a female, is decked out in the most fantastic costume; her face, bosom, arms, and legs are streaked with red and white chalk, her head adorned with red feathers, and much of the time she promenades the open space in front of the shanty with a sword in her hand, which she brandishes in a very menacing way against the bystanders. At the same time she assumes as much of the maniac in her looks, actions, gestures, and walk as possible. In many cases this is all mere affectation, and no one is deceived by it. But there are other cases where motions seem involuntary and entirely beyond the control of the person; and when you watch the wild and unnatural stare, the convulsive movements of the limbs and body, the unnatural posture into which the whole frame is occasionally thrown, the gnashing of the teeth, and foaming at the mouth, and supernatural strength that is put forth when any attempt is made at constraint, you are strongly reminded of cases of real possession recorded in the New Testament.