Four categories of police organization are identified: the Royal Canadian Mounted Police, the Provincial Police, the consolidated municipal police in Montreal, and the municipal police. Research conducted by the International Center for Comparative Criminology is grouped into five subject areas including a historicojuridic study of the organization and powers of the police; a sociohistorical approach to the police in Montreal and Toronto; a study of the manpower of the police in Montreal, Toronto, and Vancouver; evaluative research and the police; and relationships between the police and other criminal justice agencies. The most recent research project is more fully summarized. This project objective is to find the difference, if any, between the functions of the police in small, medium, and large cities, and to know if rural areas served by the provincial police have similar or different characteristics from a police viewpoint. For that study, data were collected from the different types of cities or rural areas on the types of calls for police assistance and the types of police intervention. Preliminary data evaluation shows some differences in police functioning, but calculations are still being made to test the data. The data collected is presented in 11 tables. A list of 24 references is included.