ABSTRACT
The previous chapter has sought to establish natsigns as a category of signs exclusive of the traditional natural signs and at least most instances of material images. In this chapter the focus is on signs used for communication between members of a community. In the first section we employ Grice's account of 'non-natural' meaning to demarcate signs used to communicate from natsigns, and then in the next section set forth conditions for conventional signs. In the third section are discussed the basic features of signals as a type of communicated sign lacking subject-predicate structure. Finally, the attempt is made to specify those features of human languages which distinguish them from all other types of possible communication systems.
