- The claimant had orally agreed to purchase some skins at a price per skin
- A written offer by the defendant was accepted, stating the same price, but per pound; which would have been a very good deal for the buyer
- Could the defendant rescind the contract for a mistake (in defence to a claim to lost profits by Hartog)?
- Yes, claim failed
- Where there is knowledge of an obvious mistake, there is a duty to correct that mistake