um_ has the same effect.

The songs amuse him chiefly on account of the words,
particularly through the imitations of the sounds of animals.

He knows the songs and asks of his own accord for _Kucku Esaal_,
_Kater putz_, _Kucku tralla_, but commonly hears only the first
stanza, and then wants a different song. Lately, however, he
listened very earnestly to the three stanzas of "Moepschen," and
when I asked "What now?" he answered _Noch Mops_ (more Mops).
Playing with his puppets, he hummed to himself, _tu, tu, errsen,
tu tu errsen_. I guessed that it was "Du, du liegst mir im
Herzen," which he had on the previous day wanted to hear often
and had tried to repeat.

_20th Month._--Now for the first time _ja_ is used for affirmation,
chiefly in the form _ja wohl_ (yes, indeed, certainly), which he
retains. "Do you want this?" _Ja wohl._

Being asked "Whose feet are these?" he answers correctly, _Mine_;
but no personal pronouns appear yet. He often retains a new and
difficult word that he has heard only once, e. g., "Chocolade."

To my question, after his grandfather had gone away, "Where is
Grandpapa now?" he answers sorrowfully, _verloren_ (lost).
(Cf. p. 145.)

In his plays he imitates the doings and sayings of adults, puts
a kerchief about his head and says, _Adolph go stable, give
oats_.

Not long ago, as he said good-night to us, he went also to his
image in the glass and kissed it repeatedly, saying, _Adolph,
good-night!_

_24th Month._--He knows a good many flowers, their names and
colors; calls pansies "the dark flowers."

He also caught the air and rhythm of certain songs, e. g.,
_Kommt a Vogel angeflogen, Du, du, liegst mir im Herzen, machst
mir viel Serzen_, and used to sing to himself continually when
he was on a walk. Now that he is four years old, on the
contrary, he hardly ever sings.

_25th Month._--Beetles have a great interest for him. He brings
a dead beetle into the parlor, and cries, "Run now!" His
astonishment is great that the creature does not run.

If he sees something disagreeable (e. g., he saw the other day
an organ-grinder with a monkey), he covers his face with his
hands weeping aloud and crying, _Monkey go away_. So, too, when
he sees strangers.

The Latin names of flowers and insects are easily retained by
him.