Public Libraries 3869 Public Schools To June 30, 1941, the U. S. Government had made disposal from the public domain in the United States proper of some 285,- 000,000 acres of land as homesteads, some 420,000,000 acres in cash sales and some 325,000,000 acres in grants to states, rail- roads, etc.; and title remained in the United States to some 411,096,048 acres, made up principally cf National forests, Indian res- ervations, National parks, military and naval reservations, and lands unappropriated or' withdrawr. Public Libraries. See Libraries. Public Meetings. In the United States there are no laws against the holding of pub- lic meetings, provided they are for legitimate purposes, and are conducted in an orderly manner. However, the ordinances of most towns and cities require the organizers of a public meeting to obtain a permit from the proper authority if the meeting is to be held on the streets or other public place. Public Parks. The term Public Park is very general in its application, being used alike to designate such limited areas as a square or triangle at the intersection of two or more city streets, which has been set aside for the rest and enjoyment of the people, and to describe such vast and lonely tracts as those set apart for the public by the na- tional government in the valley of the-Yel- lowstone and of the Yosemite. The one res- pect in which a public park differs from any other area of land is that its primary use is for recreation or rest out of doors. A Public Garden differs from a park in that it is dedi- cated more particularly to the culture of shrubs, flowers, and trees, for their own sake; but often the terms are used interchangeably. In New England cities the oldest public park is usually the * common,' set aside as a grazing ground when the place was settled. This common or green is characteristic not only-of the cities, but of the older New Eng- land villages. Most famous is the Boston Common which was the first to be set aside for outdoor recreation (1634). The move- ment to secure large public parks began with the acquisition of Central Park by the City of New York in 1853. This was the earliest landscape park (840 acres). Philadelphia fol- lowed the example set by New York by secur- ing its magnificent Fairmount Park in 1867 (2,816 acres); and Boston secured Franklin Park in 1883 (527 acres). In 1895 Essex County, New Jersey, pioneered in providing a park system on a county-wide plan and by 1930, 74 counties had parks. Of particular in- terest is the system in Westchester County, New York, which has a number of excel- lent connecting roadways. Cook County, 111., is the other outstanding example cf county park systems. Interstate parks are owned jointly by t\vo cr more States cs in the case of the Palisades Interstate Park a!o~g the Hudson in New York and New Jersey and Lhe wilderness trail planned to run from Maine to Georgia. The Boston Metropolitan Park System is extensive and varied and in- cludes 39 cities and towns and is adminis- tered by a commission. State parks are intended to preserve areas cf scenic, historic, scientific, cr recreational value. Among the largest State parks are the Adirondack and Catskill parks in New York State, together containing some 2,400,- coo acre?. I-i 1865 California ob- tained from Congress a grant of the famous Yosemite Valley as a State park and it re- mained such for 30 years until taken over by the Federal Government. The American side of Niagara Falls became a State reservation in 1885 and in the same year a beginning was made in the Adirondack reservation in New York State and Fort Mackinac was taken by Michigan for a State park. Public Policy, a phrase commonly employ- ed to designate a general principle of law that no one has a right to do any act which will work harm to the public. This principle is applied in many cases where the act is not specifically prohibited nor recognized as a criminal offence. It has been most frequently applied in the law of contracts. Some of the principles of law which have been evolved by the courts on the grounds of public policy have been incorporated into statutes in many States. The limits of this doctrine are not yet clearly defined. Public Schools, a term applied in the United States to schools open to all, main- tained by public expenditure, and controlled by an authority representative of the public. Since the function of a public school system is to secure an educated citizenry, the con- ception of public responsibility in education has been accompanied by an extension of the requirement of compulsory attendance at least during the period covered by the ele- mentary schools—usually to the age of four- teen, although by statute a number of States may require compulsory attendance of pupils, not suitably employed, up to the age of six- teen. The development of compulsory school I attendance has always been followed by re- 1 strictions on the employment of children IT-