Speaking of which, did you know that Breßlau worked with Heinrich von Trotschke for a while? I think this in part reaffirms my belief that we really can't trust ANY early German diplomatics scholarship entirely -- there's just always the lingering spectre of circular nationalistic reasoning. For example, there's the understanding of "national" law codes as being real exemplars of the values of particular people that obviously may be partially true, but is also now understood within the context of Carolingian
But really, what I meant to say was this:
how separable are praecarium and usufruct? That is, I understand how one could grant the latter without the former, and that sort of makes sense. I understand how one could grant the former without the latter, but it seems to me to be pointless. More importantly, I wonder how easy it was to keep such things straight among all the players.