Court of Exchequer, 156 Eng.Rep. 145 (1854).
[Plaintiff Joseph and Jonah Hadley were milers whose mill was stopped when a crank shaft broke. In order to get the mill working again, they needed to send a pattern of the crankshaft to a manufacturer to make a new one. They decided to send it via Baxendale's company, and told them the delivery was urgent because their mill was broken. Defendant's company told plaintiff's clerk that if they had the pattern by noon, they'd deliver it up to the manufacturer in Greenwhich the next day. Defendant's company picked it up and Plaintiff paid for the entire delivery up front. Defendant's company sent the pattern by can*l, rather than rail, and the pattern didn't make it up to Greenwhich for a week, during which time Hadley's mill was completely nonfunctional.
Plaintiffs won at trial and the jury awarded them 50 pounds in lost profits. Baxendale appealed, claiming that lost profits were not a direct result of the delayed delivery, but were instead consequential.] ALDERSON, B We think that there ought to be a new trial in this case; but, in so doing, we deem it to be expedient and necessary to state explicitly the rule which the Judge, at the next trial, ought, in our opinion, to direct the jury to be governed by when they estimate the damages. ...
Now we think the proper rule in such a case as the present is this: Where two parties have made a contract which one of them has broken, the damages which the other party ought to receive in respect of such breach of contract should be such as may fairly and reasonably be considered either arising naturally, i.e., according to the usual course of things, from such breach of contract itself, or such as may reasonably be supposed to have been in the contemplation of both parties, at the time they made the contract, as the probable result of the breach of it. Now, if the special circumstances under which the contract was actually made were communicated by the plaintiffs to the defendants, and thus known to both parties, the damages resulting from the breach of such a contract, which they would reasonably contemplate, would be the amount of injury which would ordinarily follow from a breach of contract under these special circumstances so known and communicated. But, on the other hand, if these special circumstances were wholly unknown to the party breaking the contract, he, at the most, could only be supposed to have had in his contemplation the amount of injury which would arise generally, and in the great multitude of cases not affected by any special circumstances, from such a breach of contract. For, had the special circumstances been known the parties might have specially provided for the breach of contract by special terms as to the damages in that case; and of this advantage it would be very unjust to deprive them. Now the above principles are those by which we think the jury ought to be guided in estimating the damages arising out of any breach of contract. ...
Now, in the present case, if we are to apply the principles above laid down, we find that the only circumstances here communicated by the plaintiffs to the defendants at the time the contract was made, were, that the article to be carried was the broken shaft of a mill, and that the plaintiffs were the millers of that mill. But how do these circumstances shew reasonably that the profits of the mill must be stopped by an unreasonable delay in the delivery of the broken shaft by the carrier to the third person? Suppose the plaintiffs had another shaft in their possession put up or putting up at the time, and that they only wished to send back the broken shaft to the engineer who made it; it is clear that this would be quite consistent with the above circumstances, and yet the unreasonable delay in the delivery would have no effect upon the intermediate profits of the mill. Or, again, suppose that, at the time of the delivery to the carrier, the machinery of the mill had been in other respects defective, then, also, the same results would follow. Here it is true that the shaft was actually sent back to serve as a model for a new one, and that the want of a new one was the only cause of the stoppage of the mill, and that the loss of profits really arose from not sending down the new shaft in proper time, and that this arose from the delay in delivering the broken one to serve as a model. But it is obvious that, in the great multitude of cases of millers sending off broken shafts to third persons by a carrier under ordinary circumstances, such consequences would not, in all probability, have occurred; and these special circumstances were here never communicated by the plaintiffs to the defendants. It follows, therefore, that the loss of profits here cannot reasonably be considered such a consequence of the breach of contract as could have been fairly and reasonably contemplated by both the parties when they made this contract. For such loss would neither have flowed naturally from the breach of this contract in the great multitude of such cases occurring under ordinary circumstances, nor were the special circumstances, which, perhaps, would have made it a reasonable and natural consequence of such breach of contract, communicated to or known by the defendants. The Judge ought, therefore, to have told the jury, that, upon the facts then before them, they ought not to take the loss of profits into consideration at all in estimating the damages. There must therefore be a new trial in this case. ...