Definition
A Latin term from Roman civil law meaning, literally, a sending, putting, or letting go. The term appears almost exclusively in compound phrases, each describing a distinct procedural act. Two recognized compounds appear consistently in the historical legal literature:
1. Missio in bona: The act of placing a creditor in possession of a debtor's property. A form of judicial or praetorian remedy allowing a creditor to take possession of the debtor's estate — not necessarily full ownership, but a possessory right — typically as a precursor to satisfying a debt or compelling performance. It functioned as a civil-law analog to certain forms of execution or sequestration.
2. Missio judicum in consilium: The sending out of the judices (the Roman equivalent of jurors or assessors) to deliberate and reach their verdict or sentence. This describes the procedural moment when the panel retires from open proceedings to deliberate privately.
Common Confusion
Missio in bona is sometimes conflated with outright confiscation or with bonorum venditio (the forced sale of a debtor's estate). They are distinct. Missio in bona established possession; bonorum venditio was the downstream proceeding that effected an actual sale. A creditor placed in possession through missio in bona did not automatically acquire title — the possessory grant was a pressure mechanism and a protective measure, not a transfer of ownership.
Recognized Forms
/SUBTYPES
MISSIO IN BONA — Creditor placed in possession of debtor's property by praetorian order. Functioned as a provisional remedy within Roman debt enforcement procedure.
MISSIO JUDICUM IN CONSILIUM — The formal withdrawal of the judices from the proceedings to deliberate on their verdict. The procedural equivalent of the modern jury retiring to the jury room.
Why It Matters in Research
Missio is not a term a researcher will encounter in modern common law sources. It appears almost entirely in civil law history, Roman law treatises, and in secondary legal literature explaining continental or ecclesiastical procedure. Researchers using Law Mind's historical corpus will find missio surfacing in two contexts: first, in treatments of Roman debt law and the praetorian system, particularly discussions of creditor remedies and insolvency procedure; second, in comparative civil-law analyses where common law writers sought Roman antecedents for equity jurisdiction, execution on judgments, or jury deliberation procedure.
The compound missio in bona is the more frequently cited form and appears in cross-references to early equity doctrine. Writers tracing the roots of equitable execution or the sequestration of assets often looked to the Roman missio framework. Researchers following that thread should also consult sources on bonorum venditio and bonorum possessio, which represent adjacent steps in the same procedural chain.
A navigational caution: the abbreviated form missio appearing without a complement in a historical source may be ambiguous. Bouvier records it simply as "letting go or sending away," suggesting it had a broader, looser use in some civil-law commentary. Context — specifically whether the discussion concerns debt enforcement or tribunal procedure — is the reliable disambiguator.
Historical Dictionary Support
The four source dictionaries are in close agreement on the substance, though they differ in depth. Black's (both editions) and Burrill treat missio as a gateway term, defining it briefly and immediately routing the reader to the two compound forms with specific treatise citations: Mackeld. Rom. Law for missio in bona and Hallifax, Civil Law for missio judicum in consilium. Burrill supplements these with additional references to Reeves' History and Kames' Equity, suggesting that missio in bona carried some relevance to equity historians working in the common law tradition.
Bouvier is notably spare — "letting go or sending away" — without elaborating the compounds. This is unusual for Bouvier and may reflect the term's limited functional role in American legal practice; it was a learned reference term rather than an operative one.
None of the source dictionaries address whether missio in bona had any practical reception in American or English equity courts, leaving that question open for treatise-level research. The Kames' Equity citation in Burrill is the most suggestive pointer toward any such connection.
Jurisdictional Note
Missio is a term of Roman civil law with no direct common law equivalent and no jurisdictional variation in the modern sense. Its significance is historical and comparative. Civil law jurisdictions (France, Spain, Louisiana, Quebec) may retain structural analogs to the underlying remedies, but the term itself does not function as operative legal terminology in any modern jurisdiction's statute or court rule.