It is the same thing with space. As Hamelin has shown,[7] space is not the vague and indetermined medium which Kant imagined; if purely and absolutely homogeneous, it would be of no use, and could not be grasped by the mind. Spatial representation consists essentially in a primary co-ordination of the data of sensuous experience. But this co-ordination would be impossible if the parts of space were qualitatively equivalent and if they were really interchangeable. To dispose things spatially there must be a possibility of placing them differently, of putting some at the right, others at the left, these above, those below, at the north of or at the south of, east or west of, etc., etc., just as to dispose states of consciousness temporally there must be a possibility of localizing them at determined dates. That is to say that space could not be what it is if it were not, like time, divided and differentiated. But whence come these divisions which are so essential? By themselves, there are neither right nor left, up nor down, north nor south, etc. All these distinctions evidently come from the fact that different sympathetic values have been attributed to various regions. Since all the men of a single civilization represent space in the same way, it is clearly necessary that these sympathetic values, and the distinctions which depend upon them, should be equally universal, and that almost necessarily implies that they be of social origin.[8] Besides that, there are cases where this social character is made manifest. There are societies in Australia and North America where space is conceived in the form of an immense circle, because the camp has a circular form;[9] and this spatial circle is divided up exactly like the tribal circle, and is in its image. There are as many regions distinguished as there are clans in the tribe, and it is the place occupied by the clans inside the encampment which has determined the orientation of these regions. Each region is defined by the totem of the clan to which it is assigned. Among the Zuñi, for example, the pueblo contains seven quarters; each of these is a group of clans which has had a unity: in all probability it was originally a single clan which was later subdivided. Now their space also contains seven quarters, and each of these seven quarters of the world is in intimate connection with a quarter of the pueblo, that is to say with a group of clans.[10] "Thus," says Cushing, "one division is thought to be in relation with the north, another represents the west, another the south," etc.[11] Each quarter of the pueblo has its characteristic colour, which symbolizes it; each region has its colour, which is exactly the same as that of the corresponding quarter. In the course of history the number of fundamental clans has varied; the number of the fundamental regions of space has varied with them. Thus the social organization has been the model for the spatial organization and a reproduction of it.