Definition
A summary procedural form formerly used in the English High Court of Admiralty, in which parties presented their respective cases briefly in writing and supported those statements by affidavit rather than through the full pleading and oral testimony process of ordinary admiralty suits. The act on petition allowed disputes to be resolved on documentary evidence alone, without the elaborate formalities of the plenary admiralty proceeding.
As a historical procedural device, it was one of two principal modes of proceeding available to suitors in the English Admiralty courts. Parties could elect between the act on petition and the older, more cumbersome plenary process, choosing the former when the facts were sufficiently clear and undisputed to be resolved on affidavits without live testimony.
Why It Matters in Research
This term is a historical artifact of English admiralty practice and has no direct modern American procedural equivalent. Researchers encountering it in primary sources should recognize several things:
The term belongs exclusively to the pre-reform English admiralty system. After the English procedural reforms of the mid-nineteenth century consolidated and restructured the admiralty courts, the act on petition as a distinct procedural category effectively disappeared from practice. American admiralty courts, which developed their own procedural traditions under the Federal Rules of Civil Procedure and the Supplemental Rules for Admiralty or Maritime Claims, never adopted this form.
Researchers working in early English admiralty reports — particularly Dodson's and Haggard's Admiralty Reports, the sources cited by Black's and Bouvier's — will encounter the term in context. The citations 2 Dod. Adm. 174 and 1 Hagg. Adm. 1 are the anchoring primary sources. When tracing a dispute in those reporters, the procedural posture of the case (whether it proceeded by act on petition or by plenary suit) affected what evidence was before the court and how the record was constructed.
Bouvier's entry adds a significant detail omitted or truncated in Black's: suitors in the English Admiralty were ordinarily entitled to elect between the two modes of proceeding. This elective character is important for understanding why some admiralty cases from this period look so different from others — shorter, affidavit-driven records versus full evidentiary proceedings.
Rapalje & Lawrence situates the act on petition more broadly, connecting it to divorce, probate, and ecclesiastical matters as well as admiralty. This is a meaningful expansion. Researchers working in English ecclesiastical court records or early divorce proceedings may also encounter the term, and should understand it signals the same condensed, affidavit-based procedure transplanted across multiple court systems sharing civilian (Roman law) procedural heritage.
Historical Dictionary Support
Black's Law Dictionary (both the first and second editions) provides identical definitions, signaling that no meaningful evolution occurred in the legal understanding of this term between editions — unsurprising for a term already historical by the time Black's was first compiled. Both editions cite 2 Dod. Adm. 174, 184 and 1 Hagg. Adm. 1 as authority.
Bouvier's Law Dictionary tracks the same core definition but is more informative on the elective nature of the proceeding, indicating that parties had a right to choose between the act on petition and the plenary mode. This detail has practical research value: it explains why counsel in historical admiralty matters would have made a strategic choice about which form to invoke.
Rapalje & Lawrence is the most expansive of the four sources, extending the term's application to ecclesiastical and probate contexts and characterizing it as "a convenient and summary mode of proceeding." This breadth reflects the shared civilian procedural tradition across English admiralty, ecclesiastical, and probate courts — all of which sat apart from the common law courts and maintained their own procedural forms well into the nineteenth century. Researchers should note that Rapalje & Lawrence's entry appears to have been partially corrupted or combined with adjacent entries (the text shifts abruptly to actio ad exhibendum), so caution is warranted in relying on it without cross-checking.
No historical dictionary source fully explains when or why a party would prefer the act on petition over plenary proceedings, or what tactical or evidentiary consequences followed from the choice. Researchers needing that level of operational detail should consult the admiralty reporters directly.
Jurisdictional Note
The act on petition was exclusively an English procedural form. American admiralty courts operated under different procedural frameworks from the founding period forward and did not adopt this mode. The term will appear only in English sources and in American scholarship discussing English admiralty practice.
Encyclopedia Cross-Reference
The Law Mind Constitutional Law Encyclopedia: The Right to Petition and Access to Courts (constitutional_107) — for background on the broader petition tradition from which summary petition-based proceedings draw historical meaning.