Definition
Institorial power is the authority conferred upon a clerk, agent, or factor to manage a shop, store, or commercial establishment on behalf of a principal. The term derives from Roman and civil law and describes the scope of agency created when a business owner — the institor — places another person in charge of a retail or mercantile operation. The person so empowered acts within the scope of that charge, and third parties dealing with the agent may hold the principal liable for obligations incurred within that authority.
In practical terms, institorial power defines the boundary of implied and express authority granted to a commercial manager or factor: what the clerk may buy, sell, contract for, and bind the principal to, by virtue of being placed in charge of the establishment.
Common Confusion
Institorial power is sometimes loosely grouped with procuratorial power (authority given to an agent to manage general affairs or a broader portfolio of business) and with simple agency. The distinction matters: institorial power is tied specifically to the management of a fixed commercial place — a shop or store — and the authority implied by that appointment is limited to transactions usual and necessary to that trade. General agency or procuratorial authority carries a broader mandate not confined to a single establishment or line of commerce. Researchers working in historical commercial law sources should not treat these terms as interchangeable.
Why It Matters in Research
This term is primarily a civil law concept absorbed into early Anglo-American commercial law through mercantile practice and Scottish law. Researchers will encounter it most often in:
- **Pre-20th-century commercial law treatises**, particularly those drawing on Scottish and civilian sources. The citation to Bell's Commentaries (1 Bell, Comm. 506, 507) that appears in both editions of Black's signals that the term entered American legal dictionaries through the Scottish institutional writers, not directly from English common law. Researchers using this term as a search anchor in historical corpus materials should expect it to appear in Scottish law, early American commercial treatises, and civilian-influenced jurisdictions rather than in mainstream English common law reports.
- **Agency law evolution**: Modern agency doctrine has largely absorbed institorial power into the broader categories of actual authority, apparent authority, and scope-of-employment analysis. Researchers tracing the historical foundations of implied authority in commercial agency will find institorial power an important conceptual predecessor. The term rarely appears in 20th-century American case law by name, but its conceptual content survives in questions about the implied authority of store managers and commercial factors.
- **Terminology traps**: Because all three dictionary sources give essentially identical, brief definitions, researchers should not expect doctrinal elaboration within the American legal dictionary tradition. Fuller treatment requires going to the civilian sources directly — Bell's Commentaries and the Roman law of the institor — rather than relying on common law digests.
- **Corpus connections**: This term connects to broader questions of principal-agent liability in commercial settings, the law of factors and brokers, and the historical treatment of respondeat superior in mercantile contexts.
Historical Dictionary Support
All three source dictionaries — both editions of Black's and Rapalje & Lawrence — agree precisely and almost word-for-word: institorial power is "the charge given to a clerk to manage a shop or store," with the shared citation to 1 Bell's Commentaries 506–507. The uniformity across sources reflects a term that entered the American legal dictionary tradition as a received civilian concept rather than one developed through domestic case law.
What the historical dictionaries do not provide: any elaboration on the scope of the power, its limits, how conflicts between the agent's acts and the principal's interests were resolved, or how the concept mapped onto contemporaneous common law agency doctrine. The entries function as identification tags rather than doctrinal guides. Researchers needing substantive treatment must go to Bell's Commentaries directly or to Roman law sources on the actio institoria — the civil law action by which third parties could sue the principal for the acts of an institor.
The adjacent entry in Black's for "Institute" (both the verb and the civil law noun for a testamentary heir) is a different term entirely; proximity in the dictionary is alphabetical coincidence, not conceptual relationship.
Jurisdictional Note
Institorial power as a named doctrine has greater historical presence in Scottish law and civilian-influenced jurisdictions than in English common law or most American states. Researchers working in Louisiana, Quebec, or other mixed civil law jurisdictions may find the term in active use in older sources where it would have been replaced by general agency terminology elsewhere.
Encyclopedia Cross-Reference
The Law Mind Constitutional Law Encyclopedia entry on Congressional Power — Enumerated Powers and the Necessary and Proper Clause is not a natural match for this term. No sufficiently relevant encyclopedia entry applies; section omitted.