An on-line database has been launched with the names of four million Britons, many of them Scots, who sailed to Canada in the 19th and 20th centuries to seek a new life in one of the largest-scale migrations in Britain's history. The records also include many holidaymakers and travellers, businesspeople, crew members and historical figures such as foreign leaders, scientists and celebrities. They include Alexander Graham Bell, who emigrated from Edinburgh to Ontario in 1870 to continue working on his invention of the telephone. And Falkirk-born Tommy Douglas, who moved with his family to Winnipeg in 1910 and later founded Canada's universal public healthcare. 150,000 foster children sent overseas alone as part of the Child Emigration Scheme at the end of the 19th and start of the 20th centuries are also included. The database is fully indexed and searchable, with information including passengers' first and last names, estimated birth years, years of arrival, ports of arrival and departure, ship names, occupations and final destinations in Canada. See the Ancestry.com site.