MERCE - The Law Mind Legal Dictionary

MERCEAuthored

The Law Mind • 724 words

Definition

To merce is to subject a person to a fine or pecuniary penalty at the discretion of a court or lord — that is, to amerce them. The term functions as a verb describing the act of imposing an amercement: an arbitrary or discretionary monetary punishment assessed against an offender who is said to be "in the mercy" of the court. In practice, merce and amerce are interchangeable in legal usage; merce is simply the shorter, older form of the same operation.

Common Language

Modern common usage (Wiktionary): "To subject to fine or amercement; to mulct; to amerce."

Historical common usage (Webster's 1913): "To subject to fine or amercement; to mulct; to amerce. [Obs.]"

Editorial note: Webster's marks the term obsolete as of 1913, which is the single most important signal for researchers. The word had already passed out of ordinary English by the time most modern legal sources were compiled, meaning it survives almost exclusively in older legal texts and records. A reader encountering "merce" in a contemporary document should treat it as an archaism deliberately borrowed from historical usage, not as current vocabulary.

Common Confusion

Merce and amerce describe the same act; the distinction is purely formal. Amerce is the more common and durable form in both English law and American practice, and most legal dictionaries index the substantive doctrine under AMERCEMENT rather than under merce. Researchers who encounter "merce" in historical records and search only under that spelling will miss the bulk of the relevant authority, which appears under "amerce," "amercement," and the related Latin "amerciamentum." Do not confuse amercement with a fine in the modern statutory sense: a fine was a fixed penalty set by law, while an amercement was discretionary — assessed at whatever amount the court or lord deemed appropriate.

Why It Matters in Research

This term matters primarily as a paleographic and indexing trap. "Merce" appears in medieval and early modern English legal records — manorial court rolls, plea rolls, and early American colonial records — where the act of imposing a discretionary penalty is recorded. Because Webster's already flags it as obsolete in 1913, its appearance in any post-nineteenth-century legal document is an immediate signal that the author is drawing on historical sources or deliberately archaizing.

Researchers working in the Law Mind corpus should index occurrences of "merce" alongside "amerce" and "amercement" to avoid artificially fragmenting what is a single legal concept across multiple headwords. The substantive doctrine — its constitutional dimensions under Magna Carta's proportionality requirement, its survival in American law, and its distinction from statutory fines — is fully developed only under AMERCEMENT. Any research path that begins at "merce" must migrate there.

The Bouvier's excerpt provided in the source material appears to concern a different entry (possibly "merchandise" or a related commerce term) and does not illuminate the doctrine of mercing directly. This is itself a caution: in older multi-volume dictionaries, truncated or misfiled excerpts can mislead researchers about the content actually indexed under a given headword. Verify the full entry in context before relying on any fragment.

Historical Dictionary Support

Bouvier's Law Dictionary does not develop "merce" as an independent doctrinal entry; the term is effectively absorbed into the treatment of AMERCEMENT. Webster's 1913 confirms the word's obsolescence in ordinary usage by that date. Neither source treats merce as carrying substantive legal meaning distinct from amerce — both treat the terms as synonyms, with amerce being the dominant form. Historical dictionaries are consistent on this point: merce adds no doctrinal content beyond what is found under amercement. What historical sources collectively miss is any sustained treatment of how the discretionary character of amercement eventually conflicted with, and was constrained by, due process norms in American constitutional law — a development that postdates the period when "merce" was live vocabulary.

Encyclopedia Cross-Reference

See Law Mind Encyclopedia: AMERCEMENT

MERCEmain

Bouvier's Law Dictionary • 1928

Held to include trade between the Atlantic and Pacific ports of the United States, within a revenue statute specifically provid- ing that it should be included. 13 A. & E. Ency. 2nd ed., 833; 1 Holmes (U. S.) 421. Under an act exempting from duty lumber to be used in the construction and equipment of "vessels built in the United States for the purpose of being employed in the foreign trade," the term "the foreign trade" limits the application of the act to vessels owned by Americans. It does not apply to those built for foreigners. Id.; 15 Blatchf. (U. S.) 26. See FOREIGN COMMERCE. FOREIGN TROOPS. While foreign troops entering or passing through our territory with the permission of the Execu- tive are exempt from territorial jurisdiction, it is doubtful whether in the absence of a treaty or positive legislation to that effect there is any power to apprehend or returr deserters. 183 U. S. 424. FOREIGN VESSEL. A vessel owned by residents in or sailing under the flag of a foreign nation. This term does not mean a vessel in which foreigners domiciled in the United States have an interest; 1 Gal. 58. An omission in the registry and enrol- ment of an American vessel does not make her foreign, but, at best, only deprives her of her American privileges. Crabbe 271. See FLAG. The patent laws were not in tended to apply to and govern a vessel of a foreign, friendly nation; 19 How. 183. See PATENT. FOREIGN VOYAGE. A voyage whose termination is within a foreign coun- try. 3 Kent 177, n. The length of the voyage has no effect in determining its character, but only the place of destina- tion; 1 Stor. 1; 3 Sumn. 342: 2 Bost. L. Rep. 146; 2 Wall. C. C. 264; 1 Pars. Mar. Law 31. FOREIGN WATERS. By U.S. Rev. St. § 4370 tugboats towing in whole or in part in foreign waters are exempt from a penalty therein imposed on foreign tug- boats for towing vessels of the United States. Where the treaty between the United States and Great Britain of June 15, 1846, fixed the boundary between the two coun- tries in the strait of San Juan de Fuca by a line following the middle of the strait, but also secured to each nation a right of free navigation over all the waters of the strait, all the waters north of the boundary line were held to be "foreign waters," within the meaning of said section; 7 U. S. App. 188; s. c. 50 Fed. Rep. 437; reversing 48 id. 319.