In the case of McMurray & Others v. Mallory & Another, the Supreme Court of the United States was asked to decide whether a contract between two parties was valid and enforceable. The contract in question was an agreement between the plaintiffs, McMurray and others, and the defendant, Mallory, to purchase a tract of land in the state of Virginia. The plaintiffs argued that the contract was valid and enforceable, while the defendant argued that it was not. The Supreme Court held that the contract was valid and enforceable. The Court found that the contract was supported by consideration, meaning that both parties had given something of value in exchange for the agreement. The Court also found that the contract was not void for lack of consideration, as the defendant had received something of value in exchange for the agreement. Finally, the Court held that the contract was not void for lack of mutuality, as the defendant had agreed to the terms of the contract and had not attempted to modify them. In conclusion, the Supreme Court held that the contract between McMurray and Mallory was valid and enforceable. The Court found that the contract was supported by consideration, was not void for lack of consideration, and was not void for lack of mutuality.

In the case of McMurray & Others v. Mallory & Another, the Supreme Court was asked to determine whether a contract between two parties should be enforced when it had been made without consideration and in violation of an existing statute. The majority opinion held that the contract could not be enforced because it violated public policy by disregarding state law. However, Justice Field dissented from this decision on the grounds that contracts are generally binding unless they involve fraud or some other form of illegality which is absent here. He argued that while there may have been no consideration for making such a contract, its enforcement would still serve justice as both parties were aware of their obligations under it and had acted accordingly since its formation. Furthermore, he noted that enforcing such contracts does not necessarily encourage violations of statutes but rather serves to protect individuals who enter into agreements with full knowledge and understanding even if those agreements do not meet all legal requirements at the time they are formed.