Definition
A Latin term from old Scots law meaning "a making clear." Clarificatio referred to the purging or clearing — in Scots legal texts, "clenging" — of an assize. The term appears in two distinct applications in historical Scots procedure:
1. Clarificatio (of an assize): The procedural act of purging or clearing an assize — that is, formally establishing the competency or purity of the assizers (jurors) by removing those subject to challenge or disqualification.
2. Clarificatio debiti: The clearness or verification of a debt — specifically, a debt that has been clearly and sufficiently proved and verified to the court's satisfaction.
Both senses share the root concept of formal demonstration or establishment: to "clarify" in the legal sense was not merely to explain but to prove conclusively and put beyond dispute.
Common Confusion
Clarificatio should not be read through the lens of modern English "clarification," which carries only the mild sense of explanation or elaboration. In its Scots legal context, clarificatio was a term of procedural art with specific consequences — the clearing of an assize or the formal verification of a debt — not a general request to make something more understandable. Researchers encountering the term in historical Scots records should resist importing the modern administrative or rhetorical meaning.
Why It Matters in Research
This is a narrow, archaic term appearing exclusively in old Scots law sources. Researchers will encounter clarificatio only in pre-Union Scottish legal materials, particularly in sources citing or glossing the works of Sir John Skene, whose De Verborum Significatione (1597) is the primary authority. The term does not appear in English common law sources and should not be assumed to carry equivalent meaning in any English legal context.
Two research traps are worth flagging. First, the two senses of clarificatio — clearing an assize versus verifying a debt — are distinct procedural concepts, and collapsing them will distort any analysis of historical Scots procedure. Burrill is the only source in the Law Mind corpus that preserves both senses with their underlying authority; Black's (both editions) records only the assize sense. Researchers working on clarificatio debiti should rely on Burrill's citation chain back through Skene to the underlying forest law chapter (Leg. Forest. c. probato, 86) rather than treating Black's entries as complete.
Second, the term "clenging" — the Scots vernacular equivalent used in the historical dictionaries — is itself a term of art referring to a formal cleansing or exculpation procedure. Researchers who encounter "clenging" in primary sources and clarificatio in glossaries are looking at the same procedural concept from different linguistic angles. Cross-referencing between Scots vernacular legal texts and their Latin glossaries is essential for accurate reconstruction.
Historical Dictionary Support
The three historical dictionaries in the Law Mind corpus are in agreement on the core definition, with meaningful variation in completeness. Black's (1st and 2nd editions) give identical, brief entries defining clarificatio as "a making clear; the purging or clearing (clenging) of an assise," citing Skene without further elaboration. Neither edition ventures beyond the assize sense or provides a citation to the underlying primary source.
Burrill's Law Dictionary is substantively richer. It preserves both recognized senses of the term, provides the full citation to Skene's De Verborum Significatione, and traces Skene's own citation authority to Assisa Regis Davidis (c. 3) for the assize sense and to the Leges Forestae (c. probato, 86) for clarificatio debiti. This layered citation chain is the critical difference between the Burrill entry and the Black's entries for any researcher attempting to work back to primary Scots legal sources. What Black's treats as a single-sense definition is, in Burrill, correctly presented as a two-sense term with distinct procedural applications.
No historical dictionary in the corpus provides extended analysis of the procedural mechanics of assize-clearing or the evidentiary standard implied by clarificatio debiti. Researchers requiring that depth will need to consult Skene directly.
Jurisdictional Note
Clarificatio is a term of old Scots law exclusively. It has no recognized counterpart in English common law and does not appear in Irish, colonial American, or later Commonwealth legal usage in its technical sense. Researchers working in post-1707 (Acts of Union) Scottish legal materials are unlikely to encounter it in active use.