478 MICHAEL SILVERSTEIN
Figure 5
distinctions of types of formal case-markings which differentiate, for exam
ple, the centrally "grammatical" vs. the peripherally "adverbial" types of
surface case-markings, as to number of different surface distinctions in
relationship to number of distinguishable argument case-relations, the dif
ferentiation of semantic types of predicates, etc., in both "plain" and trans
formed clause-level structures. This area has, of course, sparked a vast lit
erature recently in the "relational grammar" tradition, much of which is a
reinvention of standard distinctions in a cataloguing of batteries of transfor
mations, according to their effects on the apparent manifestations of case-
relations. In any event, we must understand here the possibilities, in any