Definition
A Latin maxim meaning "a different or foreign mode of trial." The phrase appears in common law doctrine as a shorthand for the principle that a subject of the English Crown should not be compelled to submit to a mode of trial other than that recognized and established by the common law of England. In its historical context, the phrase captured resistance to ecclesiastical courts, foreign tribunals, or any adjudicatory body whose procedures and authority stood outside the ordinary common law system. The concern was not merely procedural inconvenience but a substantive right: that the proper tribunal, applying the proper rules, should resolve a dispute — and that substituting any alien or unfamiliar mode of examination was itself a legal wrong.
Common Confusion
ALIUD EXAMEN should not be conflated with forum non conveniens or modern venue doctrines. Those doctrines concern geographic inconvenience within a recognized court system. ALIUD EXAMEN, by contrast, addressed the threshold legitimacy of the tribunal or mode of examination itself — whether a court or proceeding had any rightful authority over a common law subject at all. The distinction is qualitative, not merely logistical.
Why It Matters in Research
ALIUD EXAMEN is a term researchers will encounter almost exclusively in historical sources dealing with the jurisdictional conflicts between English common law courts and rival systems — chiefly the ecclesiastical courts, the Court of Admiralty, and courts administering canon or civil law. Understanding the phrase requires situating it within that centuries-long contest over institutional authority.
The phrase is cited by Hale in his History of the Common Law of England to illustrate the common law's jealousy of external adjudicatory systems. Researchers working in sources from the sixteenth through eighteenth centuries may encounter ALIUD EXAMEN invoked as a slogan in arguments against ecclesiastical jurisdiction over matters touching property, contract, or personal status — areas where common lawyers contended the ordinary courts held exclusive competence.
The practical trap for modern researchers: the phrase looks like a procedural term but functions as a constitutional or jurisdictional argument. A researcher reading it as simply meaning "different trial procedure" will underread its significance. In context, it carried the weight of a rights claim — that submitting to the aliud examen was itself a denial of the subject's legal birthright to common law process.
Researchers should also note that the term appears infrequently and almost always by reference to Hale. If you encounter it in a brief, treatise, or opinion, trace backward to Hale's History of the Common Law for the foundational usage rather than relying on secondary glosses in the dictionary sources alone.
Connection to broader corpus: this phrase bridges the Law Mind corpus entries on ecclesiastical jurisdiction, the writ of prohibition (a common law remedy specifically designed to halt proceedings in courts deemed to lack jurisdiction), and the historical competition between Chancery and the common law courts over equitable jurisdiction.
Historical Dictionary Support
All three source dictionaries — Black's (1st Ed.), Black's (2nd Ed.), and Burrill's — give virtually identical definitions, each tracing directly to the same citation: Hale's History of the Common Law of England. The consensus is complete and the definitions are functionally identical across sources, which suggests the term had a settled, narrow meaning with no significant divergence in usage across the period these dictionaries cover.
Burrill adds a bracketed page variant "[30.]" alongside the primary page reference, indicating a possible difference between editions of Hale's work — a minor but useful bibliographic note for researchers attempting to locate the precise passage.
What the historical dictionaries do not do is explain the political and institutional stakes behind the phrase. They treat it as a technical definition, not a doctrine with history. Researchers relying solely on these entries will come away with the words but not the argument. The substantive content lives in Hale and in the broader secondary literature on common law courts versus rival jurisdictions.
Jurisdictional Note
ALIUD EXAMEN is a term of English common law and has no operative modern equivalent in American federal or state law. Researchers working in American legal sources after the constitutional founding will not encounter it as live doctrine. Its relevance is historical and comparative — most useful in scholarship on English legal history, colonial American law, and the theoretical foundations of judicial authority.