Roscorla+v+Thomas

**Facts:**
After P had purchased a horse from D, "and in consideration of that sale", D promised that the horse was not more than 5 years old, was sound and free from vice. It turned out to be bad tempered and difficult to control.

**Held:**
Denman CJ (for the court) the pre-existing and executed consideration could not support the subsequent promise. The pre-existing sale, was without warranty, and imposed no other obligation than to deliver the horse upon request. There was no implied promise at that time that the horse was sound and free from vice. A consideration, past and executed will support no other undertaking than that which would be implied by law.