This article discusses the recommendations made by compositionists to import the findings of linguistics into composition instruction during the middle years of the twentieth century. The article classifies these recommendations for the uses of linguistics into three kinds: (1) improvement of instruction in grammar and usage; (2) enhancement of students' syntactic and stylistic repertoires; and (3) an aid to invention. Utilizing this history, the article argues that while linguistics can offer teachers of composition some assistance in matters that are proper to linguistic investigation and analysis, the noncontextual orientation of modern linguistics renders it insufficient as a comprehensive source of theoretical or practical assistance in composition instruction.