201; _Ib._ ii.
197.] [Footnote 138: Hardy, quoted by Aubertin, 407, 408.] [Footnote 139: _Corr.

Lit._, ii.

271.] [Footnote 140: To D'Alembert, Dec.

29, 1757; Jan.

1758.] [Footnote 141: For a short account of Helvetius's book, see a later chapter.] [Footnote 142: _Corr.