In 1872, Lindsay Russell, later to be in charge of the Special Survey, in co-operation with the Chief Astronomer to the British members of the International Boundary Commission had established, by telegraphic signals, the difference in longitude between the astronomic station on the 49th parallel at Pembina and the Observatory at Chicago. The first work of the Survey in 1874 was to determine the longitude of the point of intersection of the Winnipeg Meridian with the International Boundary. Thus, with the known relative position of Chicago and Greenwich, and by reference to the Pembina station, the necessary connection of all subsequent surveys with Greenwich was established.
- Manitoba Historical Society
Wednesday, December 21, 2005
Measure & Re-Measure
It took most of the 19th century to establish the US/Canadian border. Several surveys, much talking behind closed doors, measure and re-measure...