Drawing Syntax before Syntactic Trees: Stephen Watkins Clark's Sentence Diagrams (1847)

This contribution investigates the syntactic conceptions of, and the diagramming system introduced by, the American grammarian Stephen Watkins Clark (1847), who introduced the first comprehensive syntactic diagramming system. The structure of the English sentence is illustrated by agglutinated “bubbles” expressing the relations between words by the means of their relative position. The sentence consists of two or three horizontally aligned bubbles containing words that are called principal elements. These principal elements can be complemented with adjunct elements, that appear in bubbles attached below them. For grammatical words the conventions differ depending on whether the grammatical word is a preposition or a conjunction. Coordination is never named as such, but there is an orthogonal abstract relation that connects elements performing the same role in a “compound” construction. The system allows recursiveness in two different ways: by wrapping bubbles into other bubbles, thus following a mereological logic (part- whole relations) close to IC analysis or by hierarchically aggregating bubbles that resemble dependency trees. Clark's conceptions thus prefigure modern graphical formalizations.