The imaginative character of the people is also reflected in their religions. They believe in one or several overruling powers, and in a multitude of inferior spirits and uncanny monsters. These require propitiation rather than worship. The general belief is that a person has two souls, one of which is inseparably connected with his name and passes with it to any infant named for him; while the second either descends to a warm and pleasant abode under the earth or passes to a less agreeable one in the sky; the streaming lights of the aurora borealis were sometimes thought to be these latter spirits in their celestial home. The rites of their religion were performed chiefly by the priests, called _angekoks_, who, however, were little better than conjurers. In some parts this office was hereditary. The language of the Innuits is very much the same throughout the whole of their extended domain. Bishop de Schweinitz once told me that a few years ago a convert from the Moravian mission in Labrador went to Alaska, and it required but a few weeks for him to understand and be understood by the natives there. In character the tongue is highly agglutinative, the affixes being joined to the end of the word. The verb is very complex, having thirty-one hundred modified forms, all different and all invariable.[71] It is rich in expressions for all the objects of Eskimo life, and is harmonious to the ear. Like the Greek, it has three numbers, singular, dual and plural. Those Eskimos who live in Asia call themselves _Yuit_, a dialect form of Innuit. They dwell around East Cape and the shore south of it, in immediate contact with the Namollos or Sedentary Chukchis, a Sibiric people, totally different in language, appearance and culture. The Yuits have not at all assimilated to the reindeer-keeping, pastoral habits of the Chukchis, and by their own well-preserved traditions, moved across the straits from the American side, with which they continue commercial intercourse. Their villages are sometimes close to those of the Namollos, or Sedentary Chukchis, they intermarry, and have a jargon sufficient for their mutual purposes; but it is an error, though a prevailing one, to suppose that they are the same people. The Chukchis never entered America, and the Innuits, as a people, never crossed from Asia, or originated there.[72] The jade implements of northeastern Siberia have proved to be of the Alaskan variety of that stone, and not the Chinese jade, as some supposed.[73] From all points whence we have definite information, this interesting people are steadily diminishing in numbers, even where they are not in contact with the whites. The immediate causes appear to be increasing sterility and infant mortality. Two surviving children to a marriage is about the average productiveness, and statistics show that it requires double this number for a population to maintain itself even stationary.