term of Roman law, implies that the conception to which it serves as an index is connected with the conception with which the comparison is instituted by a strong superficial analogy or resemblance. It does not denote that the two conceptions are the same or that they belong to the same genus. On the contrary, it negatives the notion of an identity between them; but it points out that they are sufficiently similar for one to be classed as the sequel to the other, and that the phraseology taken from one department of law may be transferred to the other and employed without violent straining in the statement of rules which would otherwise be imperfectly expressed. It has been shrewdly remarked, that the confusion between Implied Contracts, which are true contracts, and Quasi Contracts, which are not contracts at all, has much in common with the famous error which attributed political rights and duties to an Original Compact between the governed and the governor. Long before this theory had clothed itself in definite shape, the phraseology of Roman contract-law had been largely drawn upon to describe that reciprocity of rights and duties which men had always conceived as existing between sovereigns and subjects. While the world was full of maxims setting forth with the utmost positiveness the claims of kings to implicit obedience--maxims which pretended to have had their origin in the New Testament, but which were really derived from indelible recollections of the Caesarian despotism--the consciousness of correlative rights possessed by the governed would have been entirely without the means of expression if the Roman law of Obligation had not supplied a language capable of shadowing forth an idea which was as yet imperfectly developed. The antagonism between the privileges of kings and their duties to their subjects was never, I believe, lost sight of since Western history began, but it had interest for few except speculative writers so long as feudalism continued in vigour, for feudalism effectually controlled by express customs the exorbitant theoretical pretensions of most European sovereigns. It is notorious, however, that as soon as the decay of the Feudal System had thrown the mediaeval constitutions out of working order, and when the Reformation had discredited the authority of the Pope, the doctrine of the divine right of Kings rose immediately into an importance which had never before attended it. The vogue which it obtained entailed still more constant resort to the phraseology of Roman law, and a controversy which had originally worn a theological aspect assumed more and more the air of a legal disputation. A phenomenon then appeared which has repeatedly shown itself in the history of opinion. Just when the argument for monarchical authority rounded itself into the definite doctrine of Filmer, the phraseology, borrowed from the Law of Contract, which had been used in defence of the rights of subjects,