The present case, however, is, on at least two grounds, fundamentally different from those cases. In the first place the obligation of the respondent to deliver before the end of February 1951 did not pass beyond the conditional stage. No appropriate notice having been given it did not become obliged to deliver or load any oats before the end of that month and its omission to do so did not constitute a breach of the contract. The word "omission" is, of course, inappropriate, for in the absence of an effective notice, there was nothing the respondent could have done towards delivery but I use it for want of a better word. This being so, what is it which the appellant claims to have forborne or waived? It cannot be said that the respondent's breach was waived for there was none and it cannot be said, in any effective sense, that it postponed the time for delivery at the request of the respondent because no time for delivery was ever fixed pursuant to the contract. It could, of course, be said that the parties agreed to vary the provision of the contract as to the time for delivery but this contention could not, in the absence of writing, avail the appellant. In the second place the provision of the contract in this case as to loading was not merely a provision as to time of performance. It was, in effect, part of the description of the contract goods. As Lord Cairns said in Bowes v. Shand [1] : "If the construction of the contract be as I have said, that it bears that the rice is to be put on board in the months in question, that is part of the description of the subject-matter of what is sold. What is sold is not 300 tons of rice in gross or in general. It is 300 tons of Madras rice to be put on board at Madras during the particular months" [2] . Lord Blackburn expressed precisely the same view. He said: "The first question which arises is, what was it that, according to that contract, the Plaintiffs were to supply, and that the Defendants were bound to take under that contract. It was argued, or tried to be argued, on one point, that it was enough that it was rice, and that it was immaterial when it was shipped. As far as the subject-matter of the contract went, its being shipped at another and a different time being (it was said) only a breach of a stipulation which could be compensated for in damages. But I think that that is quite untenable. I think, to adopt an illustration which was used a long time ago by Lord Abinger, and which always struck me as being a right one, that it is an utter fallacy, when an article is described, to say that it is anything but a warranty or a condition precedent that it should be an article of that kind, and that another article might be substituted for it. As he said, if you contract to sell peas, you cannot oblige a party to take beans. If the description of the article tendered is different in any respect it is not the article bargained for, and the other party is not bound to take it. I think in this case what the parties bargained for was rice, shipped at Madras or the coast of Madras. Equally good rice might have been shipped a little to the north or a little to the south of the coast of Madras. I do not quite know what the boundary is, and probably equally good rice might have been shipped in February as was shipped in March, or equally good rice might have been shipped in May as was shipped in April, and I dare say equally good rice might have been put on board another ship as that which was put on board the Rajah of Cochin. But the parties have chosen, for reasons best known to themselves, to say: We bargain to take rice, shipped in this particular region, at that particular time, on board that particular ship, and before the Defendants can be compelled to take anything in fulfilment of that contract it must be shewn not merely that it is equally good, but that it is the same article as they have bargained for - otherwise they are not bound to take it" [1] . The objection in Bowes v. Shand [2] was not that the seller had failed to ship the goods before the expiration of a specified time; the bulk of the goods which were to be shipped "during the months of March and/or April" were in fact shipped on the specified vessel late in the month of February. Again in Lubrano v. Gollin & Co. [3] , where reference was made to Bowes v. Shand [2] , Ferguson J. observed: "Under the contract the plaintiff was obliged to ship in April, May, and/or June. It was contemplated that the war or other unavoidable causes might occasion such a delay that it would be impossible to make the shipment in time, and so the plaintiff would not be able to carry out his contract. I think the clear meaning of the clause in question is that in such case the plaintiff was not to be responsible, that and no more. If the parties had intended that he should be at liberty to send, and the defendants be under an obligation to accept goods by a later shipment, they could have said so. The time of shipment is part of the description of the goods, and there is nothing in the contract to indicate that the defendants were in any circumstances to be required to accept goods which they had not ordered " [4] . (The italics are mine.) These observations were made in the course of disposing of demurrers and further reference was made to Bowes v. Shand in a later appeal in the same case [5] . There Cullen C.J. said: "The contract now in question provides under the heading "Shipment" - "April, May, June, direct steamers from Italy." In proceedings on demurrer in this case reported in [3] and [6] the words I have just read were closely considered, and they were referred to, especially in the judgment of Ferguson J., as words of description, so much so that the actual thing which was the subject of the contract of sale was goods of the kind specified as shipped from Italy in the months of April, May and/or June. The High Court in approving the judgment so delivered found no fault with that way of describing the nature of the contract" [7] . Thereafter the learned Chief Justice referred to the observations made in Bowes v. Shand [2] on this point. Pring and Wade JJ. agreed with the reasons of the Chief Justice, the former adding: "What was set up on behalf of the plaintiff was an agreement that the defendants should accept goods different from those which he had purchased. If that were so, of course there was a clear variation of the contract, and there being no writing evidencing it, the plaintiff is not entitled to recover" [8] . Quite obviously the provision of the contract in this case as to loading was not intended to prescribe the latest time at which the oats might be delivered. It was not a provision which could be said to be inserted for the benefit of one party rather than the other since it is quite clear that the purchaser did not assume any obligation to buy oats except oats to be loaded in the months of January and February 1951, and the seller did not undertake any obligation to sell oats except oats to be loaded during those months. This being so, the stipulation as to the time of loading must, in effect, constitute part of the description of the goods. How then can the appellants say that it extended or postponed the time for delivery? To say so implies that, unilaterally, it extended or altered the respondent's obligations under the written contract. No doubt the appellant might have accepted some substituted mode of performance in discharge of the respondent's contractual obligations but its claim cannot, in the absence of writing, be based upon an allegation that the parties agreed upon some new and different mode of performance (Noble v. Ward [1] ; Stead v. Dawber [2] and Hickman v. Haynes [3] ). These considerations lead me inevitably to the conclusion that even if it can be said that the appellant forbore to give notice under the contract because of the negotiations for shipment in Melbourne which took place, that fact does not assist its case in any way.