In search of lost space.

This paper analyzes the semantics of the French and Spanish prepositions en from the point of view of diachrony. We focus on the spatial variation of their usage in both languages. Our methodological approach is based on a corpus analysis. We draw on comparable ancient texts and analyze some semantic categories that are fundamental for the spatial description. Our results reveal a fairly active evolution of prepositions with increases and decreases of usage where we did not expect them. [ABSTRACT FROM AUTHOR]