The learned Barbazan's first edition was published in 1756, and so Diderot may well have heard some of the contents of the work then in progress.] [Footnote 54: Naigeon.] [Footnote 55: In my _Rousseau_, p.

243 (new ed.)] [Footnote 56: _Voltaire_, p.

149 (new ed., Globe 8vo).] [Footnote 57: Joubert.] [Footnote 58: Hettner, _Literaiurgeschichte des 18ten Jahrhunderts_, ii.
301.] [Footnote 59: _Oeuv._, ii.

260, etc.] [Footnote 60: _Oeuv._, ii.

258, 259.