When about four months old the child began a curious and amusing mimicry of conversation, in which she so closely imitated the ordinary cadences that persons in an adjacent room would mistake it for actual conversation. The articulation, however, was indistinct, and the vowel-sounds obscure, and no attempt at separate words, whether real or imaginary, was made until she was six months old, _when she articulated most syllables distinctly_, without any apparent effort. When she was eight months old it was discovered that she knew by name every person in the house, as well as most of the objects in her room, and the parts of the body, especially of the face. She also understood simple sentences, such as, "Where is the fire?" "Where is the baby in the glass?" to which she would reply by pointing. In the following months she named many things correctly, thus using words as words in the proper sense. The pronunciation of some final consonants was indistinct, but all initial consonants were distinctly pronounced, except _th_, _t_, _d_, _n_, _l_. These the child learned in the eleventh month. At this period she could imitate with accuracy any sound given her, and had a special preference for _ng_ (_ngang_, _ngeng_), beginning a mimicry of language again, this time using real or imaginary words, without reference to signification. But an obscurity of vowel-sounds had begun again. After the first year her facility of utterance seemed to have been lost, so that she watched the mouths of others closely when they were talking, and labored painfully after the sounds. Finally, she dropped her mimicry of language, and, at first very slowly, acquired words with the ordinary infant pronunciation, showing a preference for labials (_p_, _b_, _m_) and linguals (_t_, _d_, _n_, not _l_). Presently she substituted easy sounds for difficult ones. In the period from eighteen months to two years of age, the following defects of articulation appeared regularly: _v_ was pronounced like _b_, _th_ (_this_) like _d_, _th_ (_thin_) like _t_, _z_ like _d_, _s_ like _t_, _r_ like _w_, _j_ like _d_, _ch_ like _t_, _sh_ like _t_; further: Initial. Final. _f_ like _w_, _f_ like _p_, _l_ not at all, _l_ correctly, _g_ like _d_, _g_ correctly, _k_ like _t_, _k_ correctly, and in general correctly, _m_, _b_, _p_, _n_, _d_, _t_, _h_, _ng_, _w_. On the other hand, the initial sounds _bl_, _br_, _li_, _pr_, _fl_, _fr_, _dr_, _tr_, _thr_, _sp_, _st_, became _b_, _b_, _p_, _p_, _w_, _w_, _d_, _t_, _t_, _p_, _t_; and the initial sounds _sk_, _sw_, _sm_, _sn_, _sl_, _gl_, _gr_, _kw_, _kl_, _kr_, _hw_, became _t_, _w_, _m_, _n_, _t_ (for _s_), _d_, _w_, _w_, _t_, _w_, _hw_ (_h_ weak). The letter _y_ was not pronounced at all, at first. From this table, as Humphreys rightly observes, may be drawn the following conclusions in regard to the initial sounds of words: