Following the theory that the constitution of the British Commonwealth is founded upon the "consent of the governed" and is a product of the colonial mind, Professor Livingston has presented in this monograph a study of the establishment of self- government in the smallest of the North American provinces, Prince Edward Island. Last year his study of the attainment of Responsible Government in Nova Scotia was published in this series. In that province the leaders sought to set an example which the other parts of the Empire could follow. To them Nova Scotia was the "normal school" for the rest of the colonies. Prince Edward Island followed the way along which Nova Scotia had travelled but the forces and circumstances of her own life carried her along independently of her sister province. The triumph in Halifax in 1848, however, gave to all the neighboring colonies a new enthusiasm in their contest for the new principle. In Prince Edward Island the struggle was unique because of the system of land tenure established at the beginning of her history. When self-government was finally won there was no disturbance of the rights of property as had been anticipated. This revealed the character of the citizens of the Island and is another illustration of the genius and skill of the British people in creating and administering institutions of government.