We have indications not to be mistaken of a state of social affairs in which Conveyances and Contracts were practically confounded; nor did the discrepance of the conceptions become perceptible till men had begun to adopt a distinct practice in contracting and conveying.
It may here be observed that we know enough of ancient Roman law to give some idea of the mode of transformation followed by legal conceptions and by legal phraseology in the infancy of Jurisprudence. The change which they undergo appear to be a change from general to special; or, as we might otherwise express it, the ancient conceptions and the ancient terms are subjected to a process of gradual specialisation. An ancient legal conception corresponds not to one but to several modern conceptions. An ancient technical expression serves to indicate a variety of things which in modern law have separate names allotted to them. If however we take up the history of Jurisprudence at the next stage, we find that the subordinate conceptions have gradually disengaged themselves and that the old general names are giving way to special appellations. The old general conception is not obliterated, but it has ceased to cover more than one or a few of the notions which it first included. So too the old technical name remains, but it discharges only one of the functions which it once performed. We may
