"Thus the question was - 'was the affirmation that no sulphur had been used intended between the parties to be part of the contract of sale, and a warranty by the plaintiff?' As to this, it was contended on one side that the conversation relating to the sulphur was preliminary to entering on the contract, and no part thereof, both from the form of expression and also from the written guarantee which was shown to have been given. On the other side it was contended that the whole interview was one transaction, that the intentions of the parties alone are to be regarded, that the defendants had declared the importance they attached to the enquiry, and that the plaintiff must have known it. And the jury answered this question in the affirmative. The effect of this finding of the jury, taken with the evidence, is now to be considered. We avoid the term 'warranty' because it is used in two senses, and the term 'condition' because the question is whether that term is applicable. Then the effect is that the defendants required, and the plaintiff gave his undertaking, that no sulphur had been used. This undertaking was a preliminary stipulation; and if it had not been given, the defendants would not have gone on with the treaty which resulted in the sale. In this sense it was the condition upon which the defendants contracted; and it would be contrary to the intention expressed by this stipulation that the contract should remain valid if sulphur had been used. The intention of the parties governs in the making and in the construction of all contracts. If the parties so intend, the sale may be absolute, with a warranty superadded; or the sale may be conditional, to be null if the warranty is broken. And, upon this statement of facts, we think that the intention appears that the contract should be null if sulphur had been used; and upon this ground we agree that the rule should be discharged."