The process of transforming the mind of a man who speaks and thinks in one language so that an entirely different language can be used easily and naturally, is a difficult one. Only within the past few years has this process been given the general study it deserves. Recently a number of colleges and universities have been making investigations of the subject, and it is now commencing to take definite form as a science. At the National Conference on Methods of Americanization, held under the auspices of the Department of the Interior in May, 1919, three session were devoted to the methods of teaching English to the foreign born. At the close of the conference a committee of leading teachers of immigrants was appointed and asked to submit to this division a report which would embody the underlying principles of this problem. Based upon the report of this committee as well as upon the best thought of the country as it was brought out at the 1919 conference this division asked Dr. Henry H. Goldberger of New York, to prepare a simple and concise handbook for teachers upon the subject of teaching English to the foreign born. This book is not intended as a text but rather as a suggestive outline upon which the teacher can build to suit the needs of the particular peoples whom she is to teach, and their various degrees of literacy. Contents include: (1) General principles; (2) Organization and administration; and (3) Detailed lesson units. A bibliography is included. [Best copy available has been provided.]