Definition
A book in which a merchant, trader, mechanic, or other person records the transactions of their trade or business over time. Entries typically include sales, purchases, payments received, credits extended, and other financial dealings. In law, the significance of an account book lies less in its physical form than in its evidentiary status: a regularly kept account book may be admitted as evidence of the transactions it records, an exception to the rule against hearsay that predates the modern business records doctrine and reflects the practical necessity of commercial litigation.
Common Language
Modern common usage (Wiktionary): A book in which accounts are kept; ledger.
Historical common usage (Webster's 1913): A book in which accounts are kept.
The common and legal definitions align closely in describing the object itself. The legal meaning diverges in what follows: an account book is not merely a record-keeping tool but a legally recognized instrument that, when properly kept, carries evidentiary weight in court. The common definitions say nothing about the regularity of entries, the keeper's personal knowledge, or the conditions under which admissibility is granted or denied — distinctions that are central to the legal treatment of these records.
Why It Matters in Research
Admissibility conditions are everything. Bouvier flags that account books "when regularly kept" may be admitted in evidence — the qualifier is doing significant work. Historical case law parsed this standard closely: whether entries were made contemporaneously, whether the keeper had personal knowledge, whether the book was the type ordinarily kept in that trade. Researchers working with pre-twentieth-century commercial litigation will encounter account book evidence as a recurring evidentiary battleground, and the admissibility rules varied by jurisdiction and evolved over time.
The statutory of limitations dimension is a secondary but important research thread. Bouvier's corpus material notes that courts divided on whether the limitations period for account-based claims runs from the last debit or the last credit entry — a distinction that determined whether a debt was time-barred. Vermont, for example, ran the period from the last credit rather than the last debit. Researchers should not assume uniformity across jurisdictions or time periods when tracing limitations defenses in account-based suits.
The modern analog is the business records exception to hearsay under Federal Rule of Evidence 803(6) and its state counterparts. Researchers tracing the intellectual lineage of that rule back through the nineteenth century will find account books at its origin. The older common law doctrine was narrower and more personal — tied to the individual keeper's regularity and honesty — while the modern rule is institutional in character. Sources that use "account book" in an evidentiary context are operating under the older framework unless they explicitly invoke the modern rule.
Corpus connections: Account books appear in probate and fiduciary contexts as well as commercial ones. An executor or trustee maintaining accounts of an estate's transactions produces something functionally equivalent to a merchant's account book, and the admissibility and sufficiency of such records in fiduciary accountings is a distinct but related body of law.
Historical Dictionary Support
Bouvier's definition is concise and accurate for its era: a book kept by persons in trade, recording business transactions, admissible when regularly kept. The supporting citations point to treatise authority (Greenleaf on Evidence) and reported decisions, reflecting that the term's legal significance was already well-settled in the nineteenth century.
What Bouvier does not address is the mechanism of admissibility — Greenleaf's Evidence (cited in the entry) filled that gap, laying out the conditions under which courts would receive account books: regular course of business, contemporaneous entry, the keeper available for cross-examination where possible, and corroboration where required. Researchers relying on Bouvier alone will have the definition but not the doctrine.
The fragment in Bouvier's corpus concerning surplusage and the statute of limitations illuminates a procedural trap worth noting: in an action on accounts, a defendant found to be a net creditor on balancing could not recover that surplus in the same action. A separate suit in debt was required. This rule reinforced the importance of which entries appeared in the account book and how they were dated.
Jurisdictional Note
The admissibility of account books as evidence, and the conditions governing that admissibility, developed unevenly across American jurisdictions through the nineteenth century. Some states required corroborating testimony; others admitted the books on the keeper's oath alone. The running of the statute of limitations from debit versus credit entry was similarly unsettled, with Vermont expressly diverging from the majority approach. Modern researchers should consult jurisdiction-specific rules when working with pre-codification sources.
Encyclopedia Cross-Reference
Fiduciary Accounting — Principles, Standards, and the Uniform Fiduciary Accounting Principles (The Law Mind Trusts, Estates & Probate Encyclopedia)