degrees of, in series of animals and in man, iii. [29], [30];
parsimony of nature in imparting, iii. [20];
limitation of, to phenomena, iii. [21-29];
imperfections of, ii. 330-344.
Interesting, distinguished from beautiful, i. 229.
Ionic school, i. 33.
Irritability as objectification of will, ii. 472 seq.;
its connection with blood, ii. 478.
Isaiah ii. 437.