Characteristic for this period is the precision with which the various moods of feeling are expressed, without articulate sounds, by means of the voice, now become very high and strong, in screaming and crowing, then again in wailing, whimpering, weeping, grunting, squealing; so that the mood is recognized by the voice better than ever before, especially desire, grief, joy, hunger, willfulness, and fear. But this language can not be represented by written characters. The same holds good of the nineteenth month, in which bawling and babbling are more rare, the spontaneous sound-imitations are more frequent, the vocal cords are strained harder, the mechanism of articulation works with considerably more ease; the understanding and the retention of spoken words have perceptibly increased, but no word of the child's own, used always in the same sense, is added. When the child has thrown an object from the table to the floor, he often follows it with his gaze and whispers, even when he does not know he is observed, _atta_ or _t-ta_, which is here used in the same sense with _tuff_ or _ft_ or _ftu_, for "fort" (gone). When he had taken a newspaper out of the paper-basket and had spread it on the floor, he laid himself flat upon it, holding his face close to the print, and said--evidently of his own accord, imitating, as he had done before, the reading aloud of the newspaper, which had often been witnessed by him--repeating it for a long time in a monotonous voice, _e-ja-e-e-ja nanana ana-na-na atta-ana [=a]je-ja s[=a]_; then he tore the paper into many small pieces, and next turned the leaves of books, uttering _pa-pa-ab ta hoe-oe-[)e] moemoemoem hoe-oen[)e]_. Such monologues are, however, exceptional at this period, the rule being uniform repetitions of the same syllable, e. g., _habb habb habb habb habbwa habbua_. Screaming when water of 26 deg. C. was poured over him in the bath appeared, a few days after the first experiment of this sort, even before the bathing, at sight of the tub, sponge, and water. Previously, fear had only in very rare cases occasioned screaming, now the _idea_ of the cold and wet that were to be expected was enough to occasion violent screaming. After about three weeks of daily bathing with water from 18 to 24 deg. C., however, the screaming decreased again. The experience that a pleasant feeling of warmth succeeded, may have forced the recollection of the unpleasant feeling into the background. But the screaming can not at all be represented by letters; _ae_ and _oe_ do not suffice. The same is true of the screaming, often prolonged, before falling asleep in the evening, which occurs not seldom also without any assignable occasion, the child making known by it his desire to leave the bed. As this desire is not complied with, the child perceives the uselessness of the screaming, and at length obeys the command, "Lie down," without our employing force or expedients for soothing him.