The old tricks, "How tall is the child?" and "Where is the little rogue?" which have not been practiced for months past, have been retained in memory, for when in the eighty-second week I brought out both questions with urgency, the child bethought himself for several seconds, motionless, then suddenly, after the first question, raised both arms. After the other question he likewise considered for several seconds, and then pointed to his head as he used to do. His _memory_ for sound-impressions often repeated and associated with specific movements is consequently good. In the twentieth month there was an important advance to be recorded in his manner of repeating what was said to him. Suddenly, on the five hundred and eighty-fourth day, the child is repeating correctly and without difficulty words of two syllables that consist either of two like syllables--for the sake of brevity I will call these _like-syllabled_--or of syllables the second of which is the reverse of the first--such I call _reverse-syllabled_. Thus of the first class are _papa_, _mama_, _bebe_, _baba_, _neinei_, _jaja_, _bobo_, _bubu_; of the second class, _otto_, _enne_, _anna_; these are very frequently given back quickly and faultlessly at this period, after the repetition of the single syllables _pa_, _ma_, and others had gone on considerably more surely than before, and the child had more often tried of himself to imitate what he heard. These imitations already make sometimes the impression of not being voluntary. Thus the child once--in the eighty-third week--observed attentively a redstart in the garden for two full minutes, and then imitated five or six times, not badly, the piping of the bird, turning round toward me afterward. It was when he saw me that the child first seemed to be aware that he had made attempts at imitation at all. For his countenance was like that of one awaking from sleep, and he could not now be induced to imitate sounds. After five days the spectacle was repeated. Again the piping of the bird was reproduced, and in the afternoon the child took a cow, roughly carved out of wood, of the size of the redstart, made it move back and forth on the table, upon its feet, and chirped now as he had done at sight of the bird; _imagination_ was here manifestly much excited. The wooden animal was to represent the bird, often observed in the garden, and nesting in the veranda; and the chirping and piping were to represent its voice.