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theory of a set of legal principles, entitled by their intrinsic superiority to supersede the older law, very early obtained currency both in the Roman state and in England. Such a body of principles, existing in any system, has in the foregoing chapters been denominated Equity, a term which, as will presently be seen, was one (though only one) of the designations by which this agent of legal change was known to the Roman jurisconsults. The jurisprudence of the Court of Chancery, which bears the name of Equity in England, could only be adequately discussed in a separate treatise. It is extremely complex in its texture and derives its materials from several heterogeneous sources. The early ecclesiastical chancellors contributed to it, from the Canon Law, many of the principles which lie deepest in its structure. The Roman law, more fertile than the Canon Law in rules applicable to secular disputes, was not seldom resorted to by a later generation of Chancery judges, amid whose recorded dicta we often find entire texts from the Corpus Juris Civilis