This longitudinal study of bilingual language acquisition analyzes the order of acquisition of English grammatical morphemes in a child bilingual in English and Chichewa (a Bantu lanugage of East Central Africa). The order of acquisition obtained is compared to that obtained by Brown (1973) for monolingual English speaking children and that obtained by Hakuta (1974) for a child second-language learner. No correlation is found between the present study and either Brown's study or Hakuta's. An explanation of the results is attempted in an examination of the possible factors influencing the order of acquisition obtained. These influences are considered to be both external input and internal grammatical/semantic complexity of the English morphemes, presence/absence of equivalent morphemes in the other language, etc. It is concluded that all these factors affect the order of acquisition of grammatical morphemes in a bilingual child. (Author)