MUTUAL1. Reciprocal.
2. In contracts there must always be a consideration in order to make them valid2. This is sometimes mutual, as when one man promises to pay a sum of money to another in consideration that he shall deliver him a horse, and the latter promises to deliver him the horse in consideration of being paid the price agreed upon. When a man and a woman promise to marry each other, the promise is mutual. It is one of the qualities of an award, that it be mutual; but this doctrine3 is not as strict now as formerly4. 3 Rand. 94; see 3 Caines 254; 4 Day, 422; 1 Dall. 364, 365; 6 Greenl. 247; 8 Greenl. 315; 6 Pick. 148.
3. To entitle a contracting party to a specific performance of an agreement, it must be mutual, for otherwise it will not be compelled. 1 Sch. & Lef. 18; Bunb. 111; Newl. Contr. 152. See Rose. Civ. Ev. 261.
4. A distinction has been made between mutual debts and mutual credits. The former term is more limited in its signification than the latter. In bankrupt cases where a person was indebted to the bankrupt in a sum payable5 at a future day, and the bankrupt owed him a smaller sum which was then due; this, though in strictness, not a mutual debt, was holden to be a mutual credit. 1 Atk. 228, 230; 7 T. R. 378; Burge on Sur. 455, 457.
MUTUARY, contracts. A person who borrows personal chattels6 to be consumed by him, and returned to the lender in kind; the person who receives the benefit arising from the contract of mutuum. Story, Bailm. 47.
MUTUUM, or loan for consumption, contracts. A loan of personal chattels to be consumed by the borrower, and to be returned to the lender in kind and quantity; as a loan of corn, wine, or money, which are to be used or consumed, and are to be replaced by other corn, wine, or money. Story on Bailm. 228; Louis. Code, tit. 12, c. 2; Ayliffe's Pand. 481; Poth. Pand. tom. 22, h. t.; Dane's Ab. Index, h. t.; 1 Bouv. Inst. logo.
2. It is of the essence of this contract, 1st. That there be either a certain sum of money, or a certain quantity of other things, which is to be consumed by use which is to be the subject-matter of the contract, and which is loaned to be consumed. 2d. That the thing be delivered to the borrower. 3d. That the property in the thing be transferred to him. 4th. That he obligates himself to return as much. 5th. That the parties agree on all these points. Poth. Pràt. de Consomption, n. 1; 1 Bouv. Inst. n. 1091-6.
MYSTERY or MISTERY. This word is said to be derived7 from the French mestier now written màtier, a trade. In law it signifies a trade, art, or occupation. 2 Inst. 668.
2. Masters frequently bind8 themselves in the indentures9 with their apprentices10 to teach them their art, trade, and mystery. Vide 2 Hawk11. c. 23, s. 11.
MYSTIC. In a secret manner; concealed12; as mystic testament13, for a secret testament. Vide 2 Bouv. Inst. n. 3138; Testament Mystic.
收听单词发音 
