Ribot, Professor, on self-consciousness, [212]
Richter on obliteration of the original meanings of words, [284]
Romance languages. See [Languages]
Romanes, on teaching an ape to count, [58];
on intelligence of cebus, [60], [61];
on sign-making by caterpillars, [95], [96];
on pointing of setter-dogs, [97], [98];
on sign-making by other dogs, [100], [221];
on infant intelligence, [122], [159], [160], [188], [189], [218-220], [232], [283], [324];
on dogs and apes understanding words, [124-126];