An area sample is now being taken quarterly in Canada for labour force and a wide variety of other population data. Since reliable lists of households cannot be obtained without substantial expense the amount of field work is reduced to a minimum by the use of maps which may be thought of as an implicit listing. Random selection with known probabilities is applied in several stages, the overall result being a 1 % sample of the population. The survey data provide not only estimates of unemployment, movement of population, etc., but also give the errors of estimate. During the 3 years of its operation, information has been obtained for government and public use on housing conditions, rents, farm fires and accidents, sickness, fish consumption and many other matters.
