the claimant purchase 22,000 standard of softwood goods of fair specification over the season 1930. Next, parties have an agreement, which contained an option to buy a further 100,000 standards in 1931. When the transaction of 1930 took place, the defendant refused to supply any wood in 1931 and saying that this agreement was too vague to bind the parties. It can be clearly seen that the previous dealing showed all of option about kinds of wood specific the claimant needs, and then the defendant knew it and have responsibility supplying woods for claimant.