Definition
A Latin phrase meaning "on account of contingency" or "by reason of connection or similarity." In Scots law, ob contingentiam is a recognized ground for the consolidation of separate legal actions — that is, the joining of two or more distinct proceedings into a single action before one court. The doctrine applies where the actions share sufficient factual or legal connection that trying them separately would be inefficient or risk inconsistent results.
The phrase also appears in the form "ob contingentiam rerum" (on account of the connection of matters), and some historical sources render its meaning as "by reason of similarity" rather than strict contingency, reflecting a degree of terminological looseness across dictionaries.
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Common Confusion
The historical sources do not agree on the precise English translation of ob contingentiam. Black's Law Dictionary (both editions) renders it as "on account of connection; by reason of similarity." Burrill renders it as "in case of contingency." Rapalje & Lawrence splits the difference with "on account of contingency; by reason of similarity." These are not identical meanings: "connection" emphasizes the relationship between subject matters, while "contingency" suggests dependence of one matter upon the outcome of another. Researchers working with Scots law primary sources should determine from context which sense is operative, as the practical legal standard for consolidation may differ accordingly.
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Why It Matters in Research
This is a term of Scots law, not English common law, and researchers working in English or American legal sources will rarely encounter it except as a Latin phrase quoted from Scots authority. Its primary relevance in the Law Mind corpus is:
**Consolidation of actions in Scots practice.** Ob contingentiam is the doctrinal label for what English law would handle under rules of joinder or consolidation. A researcher studying comparative procedure — or tracing the roots of Anglo-American joinder doctrine — may find this phrase a useful point of entry into Scots procedural sources.
**Dictionary inconsistency as a research trap.** The divergence between Black's ("connection/similarity") and Burrill's ("contingency") is not merely semantic. In Scots practice, actions might be joined because they arise from the same facts (connection) or because the resolution of one depends on the other (contingency). A researcher relying on a single dictionary may misconstrue the operative legal standard. The Rapalje & Lawrence entry, which cites Bell's Appeal Cases, is the most useful because it points to a primary source.
**Bell's Appeal Cases as the anchor source.** Rapalje & Lawrence and Burrill both cite Lord Brougham in Bell's Appeal Cases, volume 7, at page 163. This is the primary judicial authority for the term in the dictionaries. Any researcher seeking to verify the doctrine or its application should consult that source directly rather than relying on the dictionary paraphrases, which appear to have been copied with minor variation across editions.
**No American counterpart.** The phrase does not appear to have migrated into American legal doctrine with any distinct technical meaning. Its appearance in American legal dictionaries is purely definitional, reflecting the tradition of including Scots and civilian Latin terms for completeness.
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Historical Dictionary Support
All four source dictionaries treat ob contingentiam as a Scots law term of procedure. Black's (1st and 2nd editions) are verbatim identical, both defining it as "on account of connection; by reason of similarity" and identifying it as a ground for consolidation of actions in Scots law. Neither edition cites a primary source.
Burrill offers a tighter translation — "in case of contingency" — and attributes the usage to Lord Brougham in Bell's Appeal Cases. This is the most specific reference in the dictionary literature and suggests the phrase had judicial currency in nineteenth-century Scots appellate practice.
Rapalje & Lawrence is the most informative entry, combining both the "contingency" and "similarity" glosses and providing the same Bell's Appeals citation. Notably, the Rapalje & Lawrence entry also contains a truncated passage beginning "Ob infamiam non solet juxta legem terræ..." which is a separate Latin maxim from Glanvill and appears to have been included in the source text immediately following ob contingentiam — it is not part of the definition of this term.
The historical dictionaries collectively reflect a phrase with a narrow, specialized application. There is no evidence of doctrinal development or significant expansion of the term's meaning over time. The entry type is a stable procedural term of Scots law that the common law dictionaries preserved for reference purposes.
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Jurisdictional Note
Ob contingentiam is a term of Scots law and civil law procedure. It has no recognized technical meaning in English common law or American law. Researchers working in Scots legal history or comparative civil procedure will find it operative; researchers working in English or American sources will encounter it, if at all, only as a quoted Latin phrase.
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