| (a) | - | A is employed by B to buy from C certain goods, of which C is the apparent owner, and buys them accordingly. In the course of the treaty for the sale, A learns that the goods really belonged to D, but B is ignorant of that fact. B is not entitled to set-off a debt owing to him from C against the price of goods. |
| (b) | - | A is employed by B to buy from C goods of which C is the apparent owner. A was, before he was so employed, a servant of C, and then learnt that the goods really belonged to D, but B is ignorant of that fact. In spite of the knowledge of his agent, B may set-off against the price of the goods a debt owing to him from C. |