THE RULE OF LAWRENCE v. FOX.—We shall now take up a very generally recognized exception to the principle we have just discussed. The question in its simplest form is this: If Smith and Jones make a contract for the benefit of Greene, may Greene sue on that contract? From what we have said in the preceding paragraph a negative answer might seem to be correct. However, to-day, stated in general terms, and leaving out of the question the limitations recognized in various jurisdictions, the very general rule is that a third party (Greene in our illustration) may enforce a promise made for his benefit, even though he is a stranger both to the contract and to the consideration. In other words, it is held not to be necessary that any consideration move from the third party. It is enough if there is a sufficient consideration between the parties who make the agreement for the benefit of the third party. So in the leading case of Lawrence v. Fox, 20 New York 268, where a debtor of the plaintiff had loaned money to the defendant and the defendant had promised him to pay the plaintiff, although the plaintiff was not a party to the contract, it was held that where a promise is "made to one for the benefit of another, he for whose benefit it is made may bring an action for its breach."

QUALIFICATION OF RULE.—We must call attention to one qualification quite generally recognized. Under this rule, that a beneficiary may enforce a contract, it is necessary that the contract must have been intended for the benefit of a third person. It is not sufficient that the performance may just happen to benefit a third person; it must have been intended for the benefit of a more or less definite person. Thus, where a county board had entered into a contract with a construction company which was building a bridge for it and maintaining a temporary foot bridge during the operation, by the terms of which contract the construction company assumed responsibility for all injuries suffered by pedestrians using the temporary foot bridge, it was held that a person who was injured because of the failure to light the foot bridge properly, was not such a third person as might sue under the rule of Lawrence v. Fox, on the contract made between the county board and the construction company.

APPLICATION OF RULE.—The rule in Lawrence v. Fox has been applied to contracts under seal in many jurisdictions, although there are some decisions to the contrary. A common application of this doctrine is found in the sale of real property with a mortgage upon it. The new purchaser as a part of the purchase price makes an agreement whereby he assumes the payment of the mortgagee. The question of whether the mortgagee, who is really the third party for whose benefit the contract is made, may sue the new owner, is generally answered in the affirmative.

CAPACITY OF PARTIES.—All persons are ordinarily presumed to be capable of contracting, but the law imposes upon some—in varying amounts and for their own protection—disabilities to make contracts which may be enforced against them; and, upon some, for considerations of public policy, disabilities to make enforceable contracts. These persons are (1) Infants; (2) Insane persons; (3) Drunkards; (4) Married women—to a limited extent; (5) Aliens; (6) Artificial persons or corporations.

WHO ARE INFANTS.—All persons under the age of twenty-one are considered infants, except that in some States, by statute, women attain their majority at eighteen. The law endeavors to protect those who have no experience and judgment against the loss of their property because of their inability to deal safely with others who might take an advantage of that fact. It may well be that one who has nearly attained his majority is as able in fact to protect his interests as one of full age, but the essence of the law is that it is a rule of universal application, and the law cannot measure the ability in each particular case. To do the greatest good for the greatest number, therefore, it conclusively presumes that those under twenty-one have not yet gained the ability to cope with others in the preservation of their property.

CONTRACTS OF AN INFANT.—An infant's contracts are voidable; that is, though they bind the other party to the bargain the infant himself may avoid them. If he avoids them the adult with whom he contracted is entitled to recover whatever he may have given the infant which still remains in the latter's possession; but if the infant has spent or used, or for any reason no longer has the consideration which the adult gave him, the infant may avoid his own obligation if he has not already performed it, and if he has already performed it he may reclaim what he has given. After he comes of age, but not before, the infant may ratify his contracts and they then become binding upon him. The retention after coming of age of property received by the infant during his minority amounts to a ratification. There are a few obligations of an infant which on grounds of public policy are binding upon him. This is true of a contract to perform military service. The marriage of an infant is binding though his engagement is not. It is frequently said that his contract for necessaries is binding; strictly this is not true. The infant is liable for necessaries, but his obligation does not depend upon his contract; it is an obligation imposed by law—what has been called a quasi-contract. The importance of this distinction is shown if the price agreed upon exceeded the real value of the necessaries. If the contract were binding, the infant would be bound to pay the agreed price, but in fact he is liable only for the fair value. What is necessary for an infant depends upon his station in life, upon whether he already has a sufficient supply of the necessary article in question, and upon whether he is receiving proper support from a parent or guardian. The privilege of an infant is generally held to exist even though the party dealing with him not only reasonably believed the infant of age, but had received actual representations from the infant to that effect.

INSANE PERSONS AND DRUNKARDS—The law affords protection to insane persons and, to a less extent, to drunkards, for the same reason as in the case of infants, namely, that those who are incapable of understanding what they are doing and of comprehending the effect of their contracts upon their property should be safeguarded against the designs of the more capable. This protection is given them by declaring some of their contracts void, and allowing them, or those legally representing them, to avoid all others with the exception of a few. Also, as in the case of infants, this privilege as to such contracts is for the insane person's protection only, and the other party to the contract may not avoid it by pleading that it was made with an incompetent person.

WHOM DOES THE LAW CONSIDER INSANE?—Modern science has clearly established that a person may be insane on one subject, and yet possess a clear understanding and be perfectly sound on another. If the contract deals with a subject of which the person has a clear understanding, he is not in need of protection and is given none. Those only are given the protection who do not possess the mind to understand in a reasonable manner the nature and effect of the act in which they engage.

BINDING OBLIGATIONS FOR NECESSARIES.—The insane must live as well as the sane; consequently they are bound to pay for necessaries furnished them but only the reasonable value, as has been explained in the case of infants. The rules for determining what these necessaries may be are the same as in the case of infants.

OTHER CONTRACTS.—It is often a difficult matter to know when a person is insane, much more difficult than it is to determine a person's age. One of the contracting parties may have acted in perfect good faith, being ignorant of the other's unsoundness of mind and having no judicial determination of insanity or other warning to put him on his guard. The contract even may be reasonable in its terms, and it may have been so acted upon that the parties to it cannot be restored to their original position. In such a case, while the law should protect the incompetent, it would be clear injustice to protect him to such an extent as to make the other party suffer through no fault of his own. It has been quite generally determined in this country, therefore, that where a person does not know of the other's insanity and there has been no judicial determination of such insanity to notify the world of it, and the contract is a fair one, and has been so acted upon that the parties cannot be restored to their original position, it is binding upon the lunatic as well as upon the other party.