‘Irrational’ [154], [174], [207], [286], [287]
Isocrates [11], [29], [78], [92], [192], [198], [236], [237], [242] ff., [264]
Jacobs, Friedrich [345], [346]
James I., King [46]
Johnson, Samuel [186]
Labials [149]
Latin (especially Latin word-order, as compared with that of Greek and the modern languages) [13], [21], [25], [29]-33, [48], etc.