This paper offers a functional explanation for the existence and for the special properties of movement rules in natural languages. The hypothesis is advanced that raising, lowering, and fronting rules all serve the function of increasing the prominence of objective content in surface structure. (CK)

Expanded version of a paper presented at the annual meeting of the Linguistic Society of America, December 1970, in Washington, D.C. Work supported by a Grace W. Drake Scholarship, a University of California graduate scholarship, and a National Science Foundation grant to the Phonology Laboratory, University of California, Berkeley. (VM)

Investigation of data from many languages has the following results: (1) the characteristics of classifier languages are distinguished, and four types identified; (2) defining criteria are postulated for classifiers, and it is discovered that every classifier is composed of one or more out of seven categories of classification. (CHK)