Bill of health. A certificate given by the authorities of the port from which a vessel clears, showing the state of the public health at the port. Clean bill of health. A certificate that no infectious disease exists ; opposed to a touched or suspected bill, or a bill actually foul. Board of health. A board of officials specially charged with the preservation of the general health of the people at large. Their jurisdiction is, ordinarily, a municipality, or a State. National Board of Health. Established by act of Congress of March 3, 1879, ch. 202, § 1 (20 St. L. 484). Consists of seven members appointed by the President, and four members detailed from the departments. Their duties are to obtain information upon all matters affecting the public health, to advise the heads of departments and State executives, to make necessary investigations at any place in the United States, or at foreign to good behavior, or be adjudged guilty of felony. By 26 Geo. II (1753), c. 26, quarantine of ships from infected countries was regulated.1 In England the public health is secured by various statutes, principally by the Public Health Act, 11 and 12 Vict. (1848), c. 63, the Local Government Acts of 1858, and amendments thereto. These statutes give large powers to the local authorities for removing nuisances, regulating burials, checking the sale of injurious food and drink, and otherwise preventing disease. The preservation of health is an absolute right of personal security.2 Injuries to a man's health occur when, by any unwholesome practices of another, a man sustains any apparent damage in his vigor or constitution: as, by the sale of bad provisions, by the exercise of a noisome trade, or by the neglect or unskillful management of his physician, surgeon, or apothecary. For such, a special action of trespass on the case for damages lies. An act (supp.ementary) of New Jersey, approved March 12, 1880, makes animals with contagious diseases common nuisances; another act (also supplementary), approved March 12, 1884, makes horses affected with glanders common nuisances; and both acts authorize destruction of the animals under prescribed conditions. Held, that the acts are within the ports, and to make rules guarding against police powers of the State; that they are not within the introduction of contagious diseases into the country and their spread from State to State.1 The preservation of the public health is one of the chief purposes of local government. Hence, municipal corporations are liberally endowed with power to prevent and avate nuisances. Public policy requires that health-officers be not disturbed in the exercise of their powers, unless clearly transcending their authority.2 All sanitary cordons and preventive regulations come under the right of preventing more serious injuries by stifling the sources of evil. In doing this, health-officers must not interfere with the natural rights of individuals. 3 Power in boards of health to abate nuisances and the causes of them, and to enforce sanitary regulations, are very great. The courts have excused an excessive exercise of power in cases where there was great peril to the public health. But an exercise which is clearly unlawful, and has no great public necessity to excuse it, will be restrained, however praiseworthy the motive. The people" shall be secure in their persons and houses from unreasonable searches and seizures." 4 By statute of 1 James I (1603), c. 31, a person infected with the plague, or dwelling in an infected house, could be compelled to keep his house. If he went into company, he could be punished by whipping, be bound R. S, 1 Sup. p. 480. 2 Hart v. Mayor of Albany, 3 Paige, 218 (1832); 1 Dillon, Munic. Corp. §§ 369, 374. 3 Spalding v. Preston, 21 Vt. 13-14 (1848). Eddy v. Board of Health, 10 Phila. 94 (1873), cases, Peirce, J. See also Butterfoss v. State, 40 N. J. E. 325 (1885). the prohibition of the Fourteenth Amendment, because, although they authorize the abatement of nuisances in advance of a judicial adjudication of the fact of nuisance, yet they do not make the determination as to that fact conclusive, and only permit acts, in abating a particular nuisance, to be justified by proof of its actual existence; thirdly, that the conditions under which the officials may act, by the statute of 1880, are mere limitations upon their power for the benefit of the owners of animals, and their adjudication that such conditions exist will not protect them, unless the existence of the common nuisance is shown. See ADULTERATE; DISEASE; POLICE, 2; QUARANTINE, 2; SOUND, 2 (2). 1. The trial of a suit in equity. 2. The session of any court, or of an adjunct thereof, for considering the proofs in a cause. 3. An examination of the testimony offered against a person charged with crime. As applied to equity cases, "hearing" means the same as "trial" at law. Final hearing. The trial of an equity case upon its merits; as distinguished from 14 Bl. Com. 161; King v. Vantandillo, 4 M. & S. 73 (1815); King v. Burnett, ib. 272 (1815). 21 Bl. Com. 129, 131. 3 Bl. Com. 122. Newark & South Orange Horse Ry. Co. v. Hunt, Sup. Ct. N. J. (Feb. 27, 1888), cases, Magie, J. Same case, 37 Alb. Law J. 356. • Vannevar v. Bryant, 21 Wall. 43 (1874); Jones v. Foster, 61 Wis. 29 (1884); 19 Wall. 225; 3 Dill. 463; 40 Ind. 179.