CONCEALMENT¹, contracts. The unlawful suppression of any fact or circumstance, by one of the partis to a contract, from the other, which in justice ought to be made known. 1 Bro. Ch. R. 420; 1 Fonbl. Eq. B. 1, c. 3, 4, note (n); 1 Story, Eq. Jur. 207.

2. Fraud occurs when one person substantially misrepresents or conceals² a material fact peculiarly within his own knowledge, in consequence of which a delusion³ exists; or uses a device naturally calculated to lull⁴ the suspicions of a careful man, and induce him to forego inquiry⁵ into a matter upon which the other party has information, although such information be not exclusively within his reach. 2 Bl. Com. 451; 3 Id. 166; Sugd. Vend⁶. 1 to 10; 1 Com. Contr. 38; 3 B. & C. 623; 5 D. & R. 490; 2 Wheat. 183; 11 Id. 59; 1 Pet. Sup. C. R. 15, 16. The party is not bound, however, to disclose patent defects. Sugd. Vend. 2.

3. A distinction has been made between the concealment of latent defects in real and personal property. For example, the concealment by an agent that a nuisance existed in connexion with a house the owner had to hire, did not render the lease void. 6 IV. & M. 358. 1 Smith, 400. The rule with regard to personalty is different. 3 Camp. 508; 3 T. R. 759.

4. In insurances, where fairness is so essential to, the contract, a concealment which is only the effect of accident, negligence⁷, inadvertence, or mistake, if material, is equally fatal to the contract as if it were intentional⁸ and fraudulent. 1 Bl. R. 594; 3 Burr. 1909. The insured is required to disclose all the circumstances within his own knowledge only, which increase the risk. He is not, however, bound to disclose general circumstances which apply to all policies of a particular description, notwithstanding they may greatly increase the risk. Under this rule, it has been decided⁹ that a policy is void, which was obtaineed by the concealment by the assured of the fact that he had heard that a vessel¹⁰ like his was taken. 2 P. Wms. 170. And in a case where the assured had information of "a violent storm" about eleven hours after his vessel had sailed, and had stated only that "there had been blowing weather and severe storms on the coast after the vessel had sailed" but without any reference to the particular storm it was decided that this was a concealment, which vitiated the policy. 2 Caines R. 57. Vide 1 Marsh¹¹. Ins: 468; Park, Ins. 276; 14 East, R. 494; 1 John. R. 522; 2 Cowen, 56; 1 Caines, 276; 3 Wash. C. C. Rep. 138; 2 Gallis. 353; 12 John. 128.

5. Fraudulent concealment avoids the contract. See, generally, Verpl. on Contr. passim; Bouv. Inst. Index, h. t.; Marsh. Ins. B. 1, c. 9; 1 Bell's Com. B. 2, pt. 3, c. 15 s. 3, 1; 1 M. & S. 517; 2 Marsh. R. 336.

CONCESSI, conveyancing. This is a Latin word, signifying, I have granted. It was frequently used when deeds and other conveyances¹² were written in Latin.. It is a word of general extent, and is said to amount to a grant, feoffment, lease, release, and the like. 2 Saund. 96; Co. Lift. 301, 302; Dane's Ab. Index, h. t.; 5 Whart. R. 278.

2. It has been held that this word in a feoffment or fine implies no -warranty¹³. Co. Lit. 384 Noke's Case, 4 Rep. 80; Vaughan's Argument in Hayes v. Bickoxsteth, Vaughan, 126; Butler"s Note, Co. Lit. 3 84. But see 1 Freem. 339, 414.

CONCESSION¹⁴. A grant. This word is frequently used in this sense when applied¹⁵ to grants made by the French and Spanish governments in Louisiana.

CONCESSIMUS. A Latin word, which signifies, we have granted. This word creates a covenant¹⁶ in law, for the breach¹⁷ of which the grantors may be jointly¹⁸ sued. It imports no warranty of a freehold, but as in case of a lease for years. Spencer's Case, 5 Co. Rep. 16 Brown v. Heywood, 3 Keble, Rep. 617 Bac. Ab. Covenant, B. See Bac. Ab. officers, &c. E.

CONCESSOR. A grantor; one who makes a concession to another.

CONCILIUM. A day allowed to a defendant¹⁹ to make his defence; an imparlance, 4 Bl. Com. 356, n.; 3 T. R. 530.