Relying on data derived from the 1971 census, the causal relations between linguistic exogamy and assimilation among the nine provincial minorities of French mother tongue are investigated. Rates of anglicization, matrimonial cohabitation, exogamy, and precocious anglicization are first defined, then calculated for different age groups. Anglicization rates for francophone spouses in linguistically homogeneous and heterogeneous marriages are also established for each province. It is observed that among those minorities which best resist anglicization, mixed marriages indeed appear to be the principal factor initiating transfer to English as the home language. Among the less resistant minorities, however, this causal relation is less evident, if not outright reversed, with exogamy appearing instead to accompany, or even to follow from a number of other anglicizing factors which lead the minorities towards a type of language transfer which is rather more evolutionary in nature than catastrophic.