The purpose of this essay is to trace in outline the history of the languages used in Calcutta and its environs during a period extending roughly from 1760 to 1840. The languages were Arabic, Bengali, English, Hindustani, Persian, Portuguese, and Sanskrit. Account has been taken of the status of the languages at different times, the people who used them, the extent to which they were used, and the purposes they served. To do this it has been necessary to take a wide view of the history of the period, and make references which properly fall within the field of political, social, religious, and economic history: such as the policies of the East India Company, both in London and Calcutta, the plans and actions of the Christian missionaries, the attitudes and preferences of the main religious communities, the development of education, and the changing opportunities in the economic life of the people.