2. Material versus immaterial.
The proximate beings can be divided into those that are embodied in some concrete form for most city purposes, and those that are not so embodied, which remain "immaterial." The nonembodied forms are the spirits and ghosts. The identification and classification of the nonembodied forms are, as we have noted, comparatively vague. These beings have relatively little cultural construction, local tradition providing only vague identifying sketches. They are not objects of any cult or community religion, and are the only beings we have listed here who are not in one or another context referred to as dya : or "gods." They are of personal and immediate local concern only. They are only rarely, fleetingly, and haphazardly encountered, although they provide the basis for many exciting accounts. The work they do for the community is to give some shared name and vague form to a range of vague private encounters, perceptions, and psychological states. The embodied beings, in contrast, constitute the working civic gods. Because of their embodiment in material objects they can be perceived in common, and can be related to significant space, either as fixed in a particular spot or carried through some particular area. The embodied deities are public objects, and as they are objects that affect
the senses in a discrete and controllable way, they serve perfectly as civic "sign vehicles."