DESCRIPTION AND GRADING OF NEIGHBOURHOODS
The map of neighbourhoods, i.e. of distinct territorial groups, is based on the specific environmental and social features of each of them. But it is, of course, not sufficient to know that such distinct territorial groups exist. Their particular attributes have to be described; the extent of the social differences between them has to be assess~d. We want to know which neighbourhoods have satisfactory and which have unsatisfactory environmental conditions; which contain chiefly poor and which contain chiefly prosperous households; which are adequately and which are inadequately equipped with social institutions. Some neighbourhoods will clearly be in need of reconditioning and remodelling and will thus be subjected to disturbances and population shifts. Therefore, it is most important to be able to anticipate, and thereby to soften, the impact of such upheavals. Stable, closely knit neighbourhoods would clearly suffer more during this process than those which are only loosely held together. Hence the degree of social integration of each of them has to be indicated. The conditions which are associated with social integration have to be examined.