Strict adherence to logical arrangement would probably require a discussion; first, of what facts amount to breach, and, second, of the effect of breach. This arrangement will be followed as far as economy of space will permit. The Question whether certain facts, such as renunciation, amount to breach depends in so many cases upon the further question whether breach as a ground for recovering damages, or breach as a ground for treating the contract as discharged is intended, that some discussion of the effect of breach is necessary in connection with a discussion of what amounts to breach, in order to avoid a wasteful repetition of the same principles under different heads.