A COORDINATION SCHEMA IS DESCRIBED WHICH HAS BEEN INTRODUCED IN THE "MITRE" GRAMMAR. THIS SCHEMA DEALS WITH THE TYPE OF COORDINATION WHERE A SINGLE SENTENCE OF TWO OR MORE CONSTITUENTS ALLOWS FOR A PARAPHRASE OF TWO OR MORE SEPARATE SENTENCES WHICH ARE IDENTICAL IN EVERY RESPECT EXCEPT FOR THE CONJOINABLE MEMBERS. THE NEW APPROACH REPLACES EARLIER APPROACHES IN GENERATIVE GRAMMAR WHICH HANDLED COORDINATE CONSTRUCTIONS BY USING GENERALIZED TRANSFORMATIONS, AND LATER EMBEDDING TRANSFORMATIONS. THE REPORT CONTAINS TWO SECTIONS. THE FIRST IS THEORETICAL AND DESCRIBES THE NEW SCHEMA WHICH CONSISTS OF TWO SETS OF RULES--(1) THE PRIMARY CONJUNCTION RULES WHICH DERIVE A SINGLE SENTENCE WITH CONJOINED CONSTITUENTS FROM TWO OR MORE COORDINATE SENTENCES, AND (2) THE SECONDARY CONJUNCTION RULES WHICH OPERATE ON THESE DERIVED COORDINATE STRUCTURES, CONVERTING THEM TO RELATED VARIANT FORMS. THIS SCHEMA ENTAILS A REEXAMINATION OF SOME OF THE PHRASE STRUCTURE RULES. THE SECOND PART OF THE REPORT DISCUSSES THE IMPLEMENTATION OF THIS SCHEMA. (KL)