APPENDIX B LXV 



Canada, for information in the various departments of geophysics, 

 particularly in regard to the "variation of the compass" as popularly 

 the magnetic declination is called. 



Surveys. 



The field work of the international boundary surveys has been 

 practically completed, with the exception of part of the Ontario- 

 Minnesota boundary, following the rivers and lakes east of Rainy 

 lake, and that part of the Quebec-Maine boundary which lies along 

 the so-called Highlands. Some additional triangulation also has 

 been found necessary along the St. Francis and St. John rivers. 



In 1914, triangulation was carried on by the Geodetic Survey 

 along the British Columbia coast south of Dixon Entrance and 

 also along the straits separating Vancouver island from the main 

 land. A base line was measured near the mouth of Fraser river. 



Triangulation was also carried on in Ontario, west of Lake 

 Superior, and in the southwestern peninsula; in Quebec, along the 

 lower St. Lawrence river; and in New Brunswick and Nova Scotia 

 along the Bay of Fundy. 



Precise levelling was carried on by six parties, operating in 

 all the provinces except Prince Edward Island and Manitoba. Con- 

 nection has been made with certain of the tide gauge stations of the 

 Department of the Naval Service in the Maritime Provinces. At- 

 tentionJs now being given to the strengthening of the net work of levels 

 extending westerly, with a view to the establishment of a good sea 

 level datum for central Canada. 



