(Droit D’Accession) French civil law. Specificatio. That property which is acquired by making a new species out of the material of another. Modus acquirendi quo quis ex aliena materia suo nomine novam speciem faciens bona fide ejus speciei dominium consequitur. It is a rule of the civil law, that if the thing can be reduced to the former matter, it belongs to the owner of the matter, e.g. a statue made of gold, but if it cannot so be reduced, it belongs to the person who made it, e.g. a statue made of marble.