--- title: "Byrne v. Boadle" type: Landmark Case source: https://casebriefly.com/landmark-cases/byrne-v-boadle --- # Byrne v. Boadle Byrne v. Boadle is the foundational case establishing the doctrine of res ipsa loquitur ('the thing speaks for itself'). It held that in certain circumstances, the mere occurrence of an accident can create an inference of negligence, relieving the plaintiff of the burden of proving the specific negligent act. This doctrine remains a critical tool for plaintiffs who cannot identify the precise cause of their injury. ## Citation 2 H. & C. 722, 159 Eng. Rep. 299 (Ex. 1863) ## Year 1863 ## Court Court of Exchequer (England) ## Facts The plaintiff was walking along a public street in front of the defendant's warehouse when a barrel of flour fell from an upper window and struck him, causing serious injuries. The plaintiff had no direct evidence of how the barrel came to fall or what specific negligent act caused it to do so. The defendant was a dealer in flour and had control of the premises. ## Procedural History The trial court entered a nonsuit against the plaintiff for failure to establish a prima facie case of negligence. The Court of Exchequer reversed, holding that the circumstances were sufficient to infer negligence. ## Issue Whether a plaintiff can establish a prima facie case of negligence based solely on the circumstances of the accident, without direct evidence of the defendant's specific negligent act. ## Holding The court held that the fact that a barrel of flour fell from a warehouse window was sufficient, by itself, to create an inference of negligence on the part of the warehouse owner. The plaintiff was not required to show the specific negligent act; the circumstances of the accident were enough to shift the burden to the defendant to explain how the accident could have occurred without negligence. ## Reasoning The court reasoned that barrels of flour do not ordinarily fall out of warehouse windows absent some negligence. The defendant had exclusive control of the barrel and the premises, and the plaintiff had no way to know what happened inside the warehouse. Chief Baron Pollock stated that the accident itself was prima facie evidence of negligence. The court recognized that requiring direct proof of negligence in such cases would effectively immunize defendants whose negligent acts occur behind closed doors. ## Impact Byrne v. Boadle gave birth to the res ipsa loquitur doctrine, which has been adopted in virtually every common law jurisdiction. The doctrine allows plaintiffs to establish a prima facie case of negligence based on circumstantial evidence when the accident is of a type that does not ordinarily occur without negligence, the instrumentality was in the defendant's exclusive control, and the plaintiff did not contribute to the accident. It remains essential in medical malpractice, products liability, and other cases where direct evidence of negligence is unavailable. ## Key Quotes - A barrel could not roll out of a warehouse without some negligence, and to say that a plaintiff who is injured by it must call witnesses from the warehouse to prove negligence seems to me preposterous. - There are certain cases of which it may be said res ipsa loquitur, and this seems one of them. ## Related Cases - escola-v-coca-cola-bottling - united-states-v-carroll-towing - summers-v-tice - sindell-v-abbott-laboratories ## Exam Relevance Res ipsa loquitur is frequently tested on exams. Students should be prepared to identify when the doctrine applies by analyzing its three traditional elements: the accident is of a type that does not ordinarily occur absent negligence, the defendant had exclusive control of the instrumentality, and the plaintiff did not contribute to the injury. ## Study Tips - Know the three traditional elements: (1) the accident does not normally occur without negligence, (2) the instrumentality was in the defendant's exclusive control, and (3) the plaintiff did not contribute to the injury. - Understand that res ipsa creates an inference of negligence, not a presumption — the defendant can rebut it with contrary evidence. - Connect this case to Escola v. Coca-Cola Bottling, where Justice Traynor used res ipsa as a springboard toward strict products liability. - Be prepared to discuss whether res ipsa shifts the burden of proof or merely the burden of production. ## Doctrine Established Res Ipsa Loquitur --- Source: [Byrne v. Boadle — CaseBriefly](https://casebriefly.com/landmark-cases/byrne-v-boadle)