These are two actions of tort in which the plaintiff seeks to recover for injuries suffered in a fall from an aluminum stepladder. In his declarations,
2
the plaintiff alleges that his fall “was due to the negligent and careless manner in which said ladder was manufactured, designed, and constructed.” The two actions were consolidated for trial in the Municipal Court of the City of Boston. In the action brought against the manufacturer of the ladder, John S. Tilley Co., Inc. (Tilley), the trial judge, after denying the defendant’s request for
*232
rulings,
3
found for the plaintiff in the amount of $1,000. In the action brought against the wholesaler of the ladder, Lynn Ladder Co., Inc. (Lynn Ladder), the trial judge, after denying five
4
of the plaintiff’s six requests for rulings, found for the defendant. The plaintiff and Tilley, alleging that they were aggrieved by the judge’s denial of their requеsts for rulings, claimed reports to the Appellate Division of the Municipal Court of the City of Boston. G. L. c. 231, § 108. These reports were consolidated into a single report which stated that it “contains all the evidence material to the questions reported.” The Appellate Division vacated the judge’s finding for the plaintiff against Tilley and directed that a finding be entered for the defеndant in each case. We treat the Appellate Division’s order that a finding be entered for Lynn Ladder as a dismissal of the report in the plaintiff’s case against Lynn Ladder. The plaintiff appealed to this court from the Appellate Division’s orders. We transferred the cases to the Appeals Court.
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G. L. c. 211A, § 12. The Appeals Court affirmed the orders of the Appellate Divisiоn in both cases.
Coyne
v.
John S. Tilley Co. Inc.
We summarize the evidence contained in the report to the Appellate Division of the Municipal Court of the City of Bоston in its aspect most favorable to the plaintiff. The plaintiff was employed as a night cleaner by York Realty, Inc. (York). On the evening of May 12, 1969, the plaintiff ascended a six-foot aluminum stepladder in order to wash an overhead transom and door. After he had perched on the ladder “for a minute or so,” a leg of the ladder “collapsed inward at a 45° angle.” The plaintiff wаs thrown to the floor and suffered injuries. Prior to the accident, the ladder had appeared to the plaintiff to be “free of defects.” “[T]he legs were straight, the finish was clean and bright, and it appeared new.”
The ladder in question was manufactured by the defendant Tilley. At some unstated time, the ladder was sold by Tilley to Lynn Ladder, also a defendant. On March 26, 1969, Lynn Ladder sold the ladder to Warrеn Electric & Hardware Supply Co., Inc. (Warren), which sold the ladder to York the following day. There was evidence that, before Lynn Ladder shipped ladders to customers, the ladders were inspected. There was further evidence that the president of Lynn Ladder examined the ladder in question prior to shipment to Warren and found it in good condition without apparent defects.
The ladder was stored by York in the cellar storeroom of the building in which the plaintiff was working on the night of his accident. At some unspecified time, the night supervisor of the building, the plaintiff’s brother, had removed the ladder from the storeroom and had given it to the plaintiff for use in his job. There was *234 evidence that the night supervisor had observed the ladder and thought it free from defects: “ [T]he legs were straight, and the surface of the ladder was shiny and free from dirt or paint.”
The plaintiff’s theory of recovery in each case is the principle of negligence we announced in
Carter
v.
Yardley
&
Co. Ltd.
Though the
Yardley
case eliminated the privity of contract requirement in actions for the negligent manufacture and sale of a product
(Carter
v.
Yardley & Co. Ltd., supra,
at 96-97, 104), the case did not relieve the plaintiff of the burden of proving that a defect attributable to a manufacturer’s (and in this case a wholesaler’s as well) negligence caused his injuries.
LeBlanc
v.
Ford Motor Co.
The Case Against Tilley.
The nature of the inference on which the plaintiff would rely in this case has been described in
Evangelio
v.
Metropolitan Bottling Co. Inc.
We believe that a trier of fact could infer as matter of common knowledgе
5
that a relatively new aluminum stepladder would not collapse in such a way that one of its legs was bent inward in a 45° degree angle in the course of usage unless someone had been negligent. Plainly, a properly fabricated and designed aluminum ladder
*236
which had received proper care and usage would not collapse if put to the use for which it was intended. See
Jiminez
v.
Sears, Roebuck & Co. 4
Cаl. 3d 379, 387 (1971). There are numerous conceivable acts of negligence which might have contributed to the collapse: A leg of the ladder might have been constructed with defective materials and then inadequately tested by the manufacturer. The ladder might not have been designed to support a load which the manufacturer should reasonably have expected the ladder to hold. The ladder might have been mishandled by a middleman in the distribution process. At the time of the accident, a leg of the ladder might have been positioned in such a way that it could not withstand the weight applied, or, in the alternative, the weight applied might have been excessive when considered in light of the ladder’s manifest construction and design. In any event, the likelihood that the collapse was caused by some negligent act could be found to be greater than that it was not. Just as in the case of a mysteriously exploding bottle (see
Evangelio
v.
Metropolitan Bottling Co. Inc., supra)
or a mysteriously malfunctioning automobile transmission (see
LeBlanc
v.
Ford Motor Co.
However, the above mentioned
inference
alone will not support a finding for the plaintiff in the instant case.
*237
“Where, аs here, the accident occurs after the defendant has surrendered control of the instrumentality involved, it is incumbent upon the plaintiff to show that the instrumentality had not been improperly handled by himself or by intermediate handlers.”
Evangelio
v.
Metropolitan Bottling Co. Inc.
We believe that the plaintiff’s evidence was sufficient to warrant exclusion of negligence by intermediate handlers as a cause of the ladder’s collapse. Cf.
Kenney
v. Sears,
Roebuck & Co.
Though the evidence presented by the plaintiff was sufficient to warrant a finding that the actions of intermediate handlers had not contributed to the ladder’s collapse, his evidence was insuffiсient to exclude his own actions as a cause for the ladder’s collapse. The evidence concerning the plaintiff’s use of the ladder is meager. The report recites only the most general evidence about the plaintiff’s actions prior to the accident. It notes only that he was on the ladder briefly while washing the door and overhead transom. There is no evidence that the plaintiff put the ladder to the normal use for which it was intended. Cf.
Andrews
v.
Barker Bros. Corp.
Accordingly, we hold that the evidence is insufficient to warrant the plaintiff’s recovery against Tilley and that the trial judge erred in denying Tilley’s request for a ruling that “ [t]he evidence does not warrant a finding that the defendant, its agents, or servants wаs [sic] negligent.” “[T]he inference of negligence does not point to the defendant until the plaintiff himself has been eliminated as a cause.” Prosser, Res Ipsa Loquitur in California, 37 Cal. L. Rev. 183, 201 (1949). “The plaintiff need not exclude every possible cause for his injuries. He is only required to show a greater likelihood that his injury was caused by the defendant’s negligence than by some other cause.”
Jankelle
v.
Bishop Indus. Inc.
*240
Thеre is no merit to the plaintiff’s contention that the requirement that he exclude his own actions as a cause of the ladder’s collapse contravenes G. L. c. 231, § 85 (as appearing in St. 1973, c. 1123, § 1). The statute provides that “the plaintiff shall be presumed to have been in the exercise of due care” and places the burden of proving contributory negligence by the plaintiff on the defendant. It is settled that the statute did not “change the substantive law of negligence in any respect, but simply affected procedure and the burden of proof.”
Perry
v.
Boston Elev. Ry.
The Case Against Lynn Ladder.
The plaintiff’s case against Lynn Ladder must fail for the same reasons as his case against Tillеy. The plaintiff has presented sufficient evidence so that an inference can be drawn that the collapse of the ladder resulted from some negligent act. He has not, however, sufficiently excluded his own actions as a cause of its collapse. His evidence is insufficient to demonstrate that some defect in the ladder more probably than not caused its cоllapse. Thus, a trier of fact could not find from the evidence introduced that a failure of Lynn Ladder to inspect the ladder so as to discover the defect, if, in fact, Lynn Ladder had such a duty of inspection
11
(compare
O’Brien
v.
Louis K. Liggett Co.
In the case against Tilley, the order of the Appellate Division vacating the finding for the plaintiff and directing a finding for the defendant is affirmed. In the case against Lynn Ladder, the order of the Appellate Division, which we have treated as an order dismissing the report, is affirmed. A judgment for the defendаnt is to be entered in each case.
So ordered.
Notes
Though the actions are brought against a manufacturer and a wholesaler, the two declarations are identical in form. Neither defendant has questioned the sufficiency of the declaration. We treat any objections which the defendants might have had as waived.
The requests for rulings which were denied are:
“ 1. The evidence does not warrant a finding that the defendant, its agents, or servants was [sic] negligent.
“2. The evidence does not warrant a finding other than that the negligence of the plaintiff contributed in whole or in part to cause the alleged injuries and damage.
“3. The evidence does not warrant a finding that the negligence of the defendant proximately caused the alleged injuries and damage.
“4. As a matter of law, the defendant breached no legal duty owed by it to the plaintiff.”
The requests for rulings which were denied are:
“1. The evidence warrants a finding for the plaintiff.
“2. The evidence requires a finding for the plaintiff.
“3. The evidence does not warrant a finding for the defendant.”
“5. As a matter of law, if the leg of the ladder here involved had been properly examined before the accident, in all probability the accident would not have occurred and an inference is warranted of negligence on the part of the defendant. Garrett vs. McDonough Co.,297 Mass. 58 .
“6. As a matter of law, the evidence warrants a finding- that the ladder was defective at the time it was sold by the defendant. Carney vs. Bereault,348 Mass. 502 .”
The plaintiff has introduced no expert testimony.
Drum
v.
New England Cotton Yarn Co.
The ladder would not likely have been subject to sudden “crystallization or deterioration” while it still appeared bright and new to observers. See
Carter
v.
Yardley & Co. Ltd.
The plaintiff in the
MacDonald
case relied on an implied warranty of fitness. A count in her declaration which sounded in tort was waived. Nevertheless, we held that, against a defendant manufacturer, a plaintiff had the duty to ‘“show that the instrumentality [which caused injuries] had not been improperly handled by himself or by intermediate handlers’ . . . whether the plaintiff is seeking recovery on a negligence or on a breach of an implied warranty theory.”
MacDonald
v.
Najjar,
A plaintiff’s evidence, in cases similar to this one, should be sufficient to warrant a finding that the accident occurred in the course of proper and foreseeable use. Such evidence might include (but would not necessarily be limited to) testimony as tо the weight on the ladder at the time of the accident, the surface on which the ladder had been placed, the positioning of the ladder and the activities in which the plaintiff had engaged while on the ladder. In sum, there must be a detailed description of the use being made of the ladder and the surrounding circumstances.
In the instant case, we have held that the plaintiff’s evidencе concerning his use of the ladder at the time of the accident was *240 insufficient to warrant a finding in his favor. Because of this holding, we have no occasion here to consider the sufficiency of the plaintiff’s evidence regarding his prior handling of the ladder. We emphasize that, in cases in which a plaintiff relies on an inference of negligent manufacture drawn from the occurrenсe of an accident, the plaintiff must demonstrate that his prior handling did not damage the product and contribute to the accident. Evidence of his proper prior handling is as essential to the plaintiff’s case as evidence of proper use at the time of the accident.
We do not now express our opinion as to the nature and extent of the duty of inspection which a wholesaler in the exercise of due care owes to a remote purchaser of a ladder.
