The geological surveys of Great Britain and Ireland were connected from 1832 to 1853 with the ordnance survey, but are now carried on independently.
In 1881 he began a long series of important surveys and excavations in Egypt, beginning with the pyramids at Giza, and following up his work there by excavations at the great temple at Tanis (1884), and discovering and exploring the long-lost Greek city of Naucratis in the Delta (1885), and the towns of Am and Daphnae (1886), where he found important remains of the time when they were inhabited by the Pharaohs.
Leonardo da Vinci, the famous artist, while in the service of Cesare Borgia as military engineer, made surveys of several districts in central Italy.
Hausen in 1840 through his initiative; he executed comprehensive magnetic surveys 1849-1858; announced the magnetic decennial period irk 1850, and his discovery of earth-currents in 1862.
In 1902-1903 French officers under Colonel Destenave made detailed surveys of the south-eastern and eastern shores and the adjacent islands.
He visited the New Hebrides, Santa Cruz, New Caledonia and Solomon Islands, and made careful though rough surveys of the Louisiade Archipelago, islands north of New Britain and part of New Guinea.
With him, in 1604, Champlain was engaged in exploring the coast as far south as Cape Cod, in seeking a site for a new settlement, and in making surveys and charts..
These far extensions furnish the basis for a vast amount of exploratory survey of a strictly geographical character, and they have contributed largely towards raising the standard of accuracy in Asiatic geographical surveys to a level which was deemed unattainable fifty years ago.
History surveys a presentation of man's life in which the union of these two contradictions has already taken place.
In the catalogues of Ptolemy, Tycho Brahe, and Hevelius, eight stars are mentioned; but recent uranographic surveys have greatly increased this number.