LondonSmog: A mixture of smoke and fog polluting the atmosphere. (Dorland, 27th ed)History, 18th Century: Time period from 1701 through 1800 of the common era.History, 19th Century: Time period from 1801 through 1900 of the common era.History, 17th Century: Time period from 1601 through 1700 of the common era.EnglandGreat BritainWest Indies: Islands lying between southeastern North America and northern South America, enclosing the Caribbean Sea. They comprise the Greater Antilles (CUBA; DOMINICAN REPUBLIC; HAITI; JAMAICA; and PUERTO RICO), the Lesser Antilles (ANTIGUA AND BARBUDA and the other Leeward Islands, BARBADOS; MARTINIQUE and the other Windward Islands, NETHERLANDS ANTILLES; VIRGIN ISLANDS OF THE UNITED STATES, BRITISH VIRGINI ISLANDS, and the islands north of Venezuela which include TRINIDAD AND TOBAGO), and the BAHAMAS. (From Webster's New Geographical Dictionary, 1988, p1330)Family Practice: A medical specialty concerned with the provision of continuing, comprehensive primary health care for the entire family.Urban Health: The status of health in urban populations.History, 20th Century: Time period from 1901 through 2000 of the common era.State Medicine: A system of medical care regulated, controlled and financed by the government, in which the government assumes responsibility for the health needs of the population.Caribbean Region: The area that lies between continental North and South America and comprises the Caribbean Sea, the West Indies, and the adjacent mainland regions of southern Mexico, Central America, Colombia, and Venezuela.Anniversaries and Special Events: Occasions to commemorate an event or occasions designated for a specific purpose.Venereology: A branch of medicine which deals with sexually transmitted disease.Explosions