Definition
Ne baila pas (Law French: "he did not deliver") is a plea in the common law action of detinue by which the defendant denies that the chattel or item sued for was ever delivered to him. The plea operates as a flat denial of one of the foundational allegations in a detinue action — that the defendant received the goods in question — and puts the plaintiff to proof of that delivery.
Why It Matters in Research
Ne baila pas is a relic of common law pleading in detinue, an action that was itself largely superseded by trover and conversion by the eighteenth century and formally abolished in England by the Common Law Procedure Act 1852. Researchers working in pre-abolition pleading records, early American common law materials, or treatises on personal property actions will encounter this plea in its procedural context. Because detinue itself is rarely discussed in modern sources, the plea tends to appear without explanation in older reports and form books. Its significance lies not in modern doctrine but in identifying the procedural posture of a historical case: when ne baila pas appears, the defendant is contesting the threshold fact of receipt, not ownership, title, or the right to retain. Researchers should also note that the action of detinue carried with it the right to wage of law (compurgation) — a feature that made it unpopular with plaintiffs and contributed to detinue's displacement — so the appearance of this plea in the record may signal a case where the plaintiff faced that additional tactical disadvantage.
Historical Dictionary Support
The two Black's Law Dictionary editions offer slightly different framings. The second edition is the more complete and accurate statement: ne baila pas is a plea in detinue denying delivery to the defendant of the thing sued for. The first edition entry as reproduced in the source material appears corrupt or truncated ("he did not ceive the next proceedings of his opponent"), likely a transcription or typesetting error in the original. Researchers should rely on the second edition formulation. Sellon's Practice (cited in the first edition as "1 Sell. Pr. 8") is a real source — William Sellon, The Practice of the Courts of King's Bench and Common Pleas (1792) — and confirms the procedural context, though the passage as quoted in the first edition source is not reliable as reproduced here. Neither Black's edition addresses the relationship between ne baila pas and the broader history of detinue's displacement, or the connection to wager of law, gaps that a researcher must fill from treatise sources such as Gould on Pleading or Stephen's Principles of Pleading.
Jurisdictional Note
Ne baila pas belongs entirely to the pre-modern common law pleading tradition. It has no operative significance in any modern American or English jurisdiction. Early American state courts that inherited common law forms before the adoption of code pleading (generally mid-nineteenth century) would have recognized and applied the plea; after code pleading reforms, the specific plea form disappeared even where detinue-like remedies were retained by statute.