[CALLISTRATUS libro secundo institutionum. ] §41.1.12.prLacus et stagna licet interdum crescant, interdum exarescant, suos tamen terminos retinent ideoque in his ius alluuionis non adgnoscitur.
[CALLISTRATUS, Institutes, book 2] Lakes and pools, although they may sometimes overflow and sometimes dry up, yet retain their boundaries, and therefore in their case the right of alluvion is not recognized.
§41.1.12.1Si aere meo et argento tuo conflato aliqua species facta sit, non erit ea nostra communis, quia, cum diuersae materiae aes atque argentum sit, ab artificibus separari et in pristinam materiam reduci solet.
If some object is made by melting together my bronze and your silver, it will not be our common property, because, since copper and silver are of different materials, they can be separated by craftsmen and reduced to their original state.