This is a scholarly chapter from what appears to be an early 20th-century comparative religion or anthropology text, written in the tradition of evolutionary anthropology (think Tylor, Frazer). Its central argument is that animism — the belief that spirits inhabit natural objects and places — follows logically from earlier beliefs about the human soul: if the soul can leave the body invisibly during dreams or at death, there is no reason to deny the existence of spirits that are *permanently* bodiless and free-roaming. The author supports this with cross-cultural examples ranging from Japanese Shinto (citing prayers invoking millions of *kami*) to Central Australian, New Guinean, and Guianese indigenous traditions, treating these as convergent evidence for a universal human tendency. A key distinctive claim is that this spirit-world is structured by a moral dualism — good and bad spirits — that directly mirrors human social experience: spirits, like people, can be appeased, angered, bribed, or outwitted. The author explicitly frames this as the deep ancestral root of sophisticated theological categories like "angelology" and "demonology" in world religions. The perspective is comparativist and reductionist, treating all spirit belief as a rational (if mistaken) inference from universal human experience rather than as revelation or superstition.