International audienceThis paper addresses the relation between reference chains and structural units, in the three first chapters of the Essais sur la peinture by Diderot. This corpus is taken from the DEMOCRAT project, during which it has been prepared and annotated. In a first part, a close analysis addresses the distribution of referents and chains across the three chapters and five comparable paragraphs, in order to observe the variability in lengths, coverage and density. A second part focusses on reference chains with respect to units theme (chapter titles, paragraph themes). Multilevel quantitative analyses have been operated with help of the URS extension of TXM. It appears that reference chains do affect textual continuity and dis...