Definition
Mesne profits are the rents, issues, and profits derived from land during the period that a rightful owner was wrongfully kept out of possession. The term denotes intermediate profits — those accruing between two fixed points in time: the moment the plaintiff's right to possession arose and the moment actual possession was restored.
The classic procedural context is the action of ejectment. At common law, ejectment recovered the land itself but did not allow the plaintiff to claim the value of the wrongful occupancy in the same proceeding. A separate action — historically in trespass, quare clausum fregit — was required to recover mesne profits. In that subsequent action, the plaintiff could recover the rental value of the premises, together with any profits the defendant actually received (or, in some formulations, that a reasonable occupant would have received) during the period of wrongful possession.
The term is also used more broadly to describe any intermediate profits that have accrued between two defined points, though land disputes remain the paradigm case.
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Common Language
Modern common usage (Wiktionary): No standard common-language entry. "Mesne" does not appear as a general English word in modern dictionaries; it is legal vocabulary borrowed from Law French.
Historical common usage (Webster's 1913): Webster's 1913 identifies "mesne" solely as a legal term meaning "middle" or "intermediate," as in "mesne lord" (a feudal lord holding land of a superior lord). No independent popular meaning exists.
The word "mesne" carries no risk of common-language confusion — it is transparent jargon that nonlawyers will simply not recognize. The research risk runs the other direction: lawyers familiar with "mesne" in the feudal tenure context (mesne lord, mesne process) may not immediately connect it to this distinct profits remedy. The word is the same; the contexts are different.
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Common Confusion
Mesne profits should not be confused with two related but distinct concepts:
Rents and profits generally: Not all rents and profits are mesne profits. Mesne profits is a remedy term — it describes profits recoverable because of wrongful exclusion. Ordinary rent is a contractual or property concept that does not require wrongful ouster.
Waste: A wrongful occupant who damages or depletes the property commits waste, which is a separate cause of action. Mesne profits compensates for the value of use and occupancy; waste compensates for injury to the corpus of the property. In historical practice both could be pursued, but they are conceptually distinct and subject to different measures of damages.
Accounting of profits in equity: In equity, an accounting of profits is a broader remedy available against fiduciaries and other wrongdoers who have made gains the law attributes to the plaintiff. Mesne profits is the common-law analog in the specific context of wrongful land possession. The two remedies share a disgorgement rationale but have different procedural homes and histories.
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Why It Matters in Research
The two-action structure is the central trap. Historical sources assume the reader knows that ejectment and mesne profits were separate proceedings. A researcher reading a reported ejectment case who finds no damages award should not conclude the plaintiff recovered nothing — a mesne profits action may have followed separately and may be reported (or unreported) elsewhere. This structural bifurcation is largely invisible in modern practice, where consolidated pleading rules typically allow both claims in a single action, but it dominates the historical record through the nineteenth century.
Jurisdictional variation was significant and early. Bouvier's notes that several states allowed full damages, including mesne profits, to be assessed by the jury in the original ejectment action, making the second action unnecessary. When researching a pre-twentieth century case from any American jurisdiction, confirm whether that state had consolidated the claims before assuming the two-action structure applies.
The measure of recovery evolved. Early cases confined recovery to profits actually received by the wrongful occupant. Later authorities expanded the measure to the reasonable rental value of the premises regardless of what the defendant actually pocketed. This distinction matters when evaluating historical damages awards: an apparently low recovery may reflect the earlier, narrower measure rather than a weak liability finding.
"Media proficua" is the Latin form found in older records and treatises. Burrill's supplies this form; researchers working in Latin-language court records or early treatises should recognize it as the equivalent term.
The verdict in a prior ejectment action operates as conclusive evidence of title and right to possession in the subsequent mesne profits action. This evidentiary shortcut is not always flagged in secondary sources but significantly shapes the dynamics of the second proceeding.
Modern pleading largely absorbs mesne profits into general damages in ejectment or unlawful detainer actions, and the term itself has receded. But the older cases and treatises use it as a term of art, and failure to recognize it will cause a researcher to misread the remedial posture of historical land disputes.
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Historical Dictionary Support
The three source dictionaries agree on the core definition: mesne profits are intermediate profits accruing between two given periods, recoverable by a plaintiff who has been wrongfully kept out of land. Black's and Burrill's state this at the highest level of generality. Bouvier's is the most procedurally detailed, specifying the mechanism (trespass, quare clausum fregit following ejectment) and acknowledging state-by-state variation in whether a second action is required.
Burrill's supplies the Latin form, media proficua, which the other sources omit — useful for researchers working with older records.
All three sources reflect the classical common-law two-action structure as the norm. None of the historical dictionaries adequately addresses the modern consolidation of the claims, which means a researcher relying solely on these entries will understand the historical picture clearly but may be misled about current practice if the historical entry is read as a description of present procedure.
Bouvier's reference to the verdict in the original action being "conclusive as to the damages" in some states is a significant point the other dictionaries do not raise, and it reflects an important interstate variation that affected litigation strategy in the nineteenth century.
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Jurisdictional Note
American jurisdictions varied substantially on whether mesne profits could be recovered in the ejectment action itself or required a separate proceeding. By the twentieth century, code pleading and the Federal Rules of Civil Procedure rendered the separate action largely obsolete in most jurisdictions. English practice historically maintained the two-action structure longer. Researchers should not assume uniformity across either time or place.
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Encyclopedia Cross-Reference
Accounting of Profits — Disgorgement of Wrongful Gains (The Law Mind Remedies & Equity Encyclopedia)
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