Chapter Vii.--_opp._ V. 142, 168, 173, 248, 250; Iv. 291; V. 106, 242,

142, 137-8, 290; iv. 175-7, 42-3; v. 153, 241; iv. 9; v. 96, 242, 574; iv. 332; v. 97; iv. 176-7, 43; v. 176, 131.

Chapter VIII.--Opp. iv. 309-13; v. 185; iii. 55, 28, 43-4; v. 97; iii. 47-52, 52-3; iv. 14, 45, 57; v. 148, 133; iii. 53, 85-7, 58; v. 240-41, 484; iv. 170-71, 180, 351.

Chapter IX.--Opp. v. 462-3, 544; iv. 43-4, 46; iii. 94, 192-3, 85, 87; iv. 18, 335, 15; v. 129-30, 563, 564; iii. 55; v. 571; iv. 245, 13, 159-60; Scritti inediti, Del Giudice, pp. 11-14.