The contract in question was negotiated in the months of April and May 1949, and was in the result expressed in correspondence concluding with a telegram of 20th May 1949. The defendant conducts a large departmental store in Sydney and the plaintiff conducts an electrical business in Melbourne. At that time the plaintiff was prepared to give demonstrations or exhibitions of television in commercial and other establishments and, to that end, to install temporarily the necessary equipment. The material terms of the contract between the parties were that the plaintiff, for a charge of £2,500, would install its apparatus or equipment in the defendant's store and there give demonstrations of television for a period from 11th July to 23rd July 1949 inclusive. The purpose of the defendant was to provide an attraction which would draw customers to the store. It was of course obvious that on either side a good deal must be done over a period immediately preceding the date when the exhibition of television commenced. On the defendant's side it would be necessary to advertise the display of television and also to arrange part of the interior of the store so as to make the required space available. On the plaintiff's side its equipment must be freed from other uses, brought to Sydney and set up in the store. The details of all this had been the subject of discussion between the parties. Unfortunately, before the date the parties had fixed, viz. 11th July 1949, a rather serious coal strike began in New South Wales. As a result of the coal strike it appears that there was a considerable falling off in the number of shoppers coming into the city and the defendant decided that it had become most inopportune to proceed with the display of television. Over the telephone the plaintiff in Melbourne was informed of the situation in Sydney and asked if it would postpone the demonstration until another date could be fixed. For the defendant it was stated that after the strike was over it would require two or three weeks for the store to become sufficiently busy and that it would take two or three weeks more to carry out the arrangements for the exhibition. This conversation evoked from the plaintiff a letter dated 30th June 1949 which began by noting the defendant's inability to proceed with the demonstration of television at that stage or within a period of two or three weeks after the end of the coal strike. The letter proceeded: - "We appreciate the difficulties you face and although it involves considerable reshuffling of our own arrangements, we will be pleased to vary our agreement with you by an alteration of the dates of the demonstration." Then followed some information as to certain arrangements which the plaintiff had already made for the use of the equipment in Brisbane and a suggestion that afterwards, viz. on Monday, 22nd August 1949, the demonstration for two weeks in Sydney should commence. To this letter the defendant did not reply until after the date, 11th July 1949, had passed which the contract fixed for the commencement of performance. The plaintiff did not of course make any attempt in fact to begin the installation of the equipment with a view to begin the television exhibition on that day. In pursuance of the communications from the defendant, the plaintiff simply awaited further information as to the time or times which would prove suitable to the defendant. Thus the situation at the time when performance according to the tenor of the contract was due simply was that the plaintiff, though ready and willing to perform, had refrained from tendering actual performance at the request of the defendant. It had expressed its willingness to agree on a variation of the contract by substituting a new date but no agreement of variation had been made. The original agreement therefore stood but, without any breach of contract on the part of the plaintiff, the date for performance had gone by. Up to this point at all events, the parties had not agreed on a variation of the contract. The plaintiff had simply complied with a request on the part of the defendant to forbear from punctual performance, awaiting meanwhile an answer to the defendant's proposal for a variation of the contract by fixing a new date. The result of such a request followed by forbearance was to dispense the plaintiff from any actual tender of performance on the due date, the parties remaining bound nevertheless within a reasonable time to give and accept performance. If it be possible at all to infer that up to this point the parties had agreed on any variation, it could only be an agreement to the limited extent of removing from the contract the fixed day named for the commencement of the fortnight's exhibition. The difference between the two positions is not of importance in the present case. For the transaction is not one to which the Statute of Frauds applies and on either view there was a contract on foot requiring performance at a reasonable time to be worked out by the implications which the law makes when the co-operation of the parties is necessary to effect performance and there is no exact time appointed by the tenor of their mutual obligation.