APPENDIX B LIX 
The study of microseisms and their relationship to the action of 
waves on the sea-shore, consequent to areas of low barometer on the 
ocean, is being continued. 
The magnetic survey of Canada occupied the territory west of 
Winnipeg to the Rocky Mountains and northward to the north branch 
of the Saskatchewan. In all 60 stations were occupied, at each of 
which the three elements, declination, inclination and intensity were 
determined. 
To the magnetic equipment was added a Toepfer Earth Inductor, 
used for standardizing dip circles. 
At five stations in British Columbia, Prince Rupert, Hazelton, 
Atlin, Revelstoke and Field, the latitude and longitude was astrono- 
mically determined and at two of these, Hazelton and Atlin permanent 
meridian marks were placed. 
The surveys along the various sections of the International Bound- 
ary line have been continued as heretofore. The 141st Meridian of west 
longitude, which forms the boundary between Yukon Territory and 
Alaska, was projected to a point about ten miles from the Arctic Ocean, 
and good progress was made with the final monumenting and with the 
triangulation and topography of the adjacent country. It is expected 
that the survey will be completed to the Arctic Ocean during the coming 
summer. There will then remain about ninety miles of the meridian 
to be surveyed between Natazhat Ridge and Mount St. Elias. This is 
a very difficult region being covered with high mountains and ice fields. 
Surveys were carried on to define the boundary of the Alaska Coast 
Strip east of Mt. St. Elias, and along Portland Canal. The survey of 
the 49th parallel was carried as far as Red River. This completes the 
survey of the southern boundary of British Columbia, Alberta, Saskatch- 
ewan and Manitoba, with the exception of about ninety miles between 
Red River and Lake of the Woods, which will be taken in hand this 
summer. The surveys for the re-monumenting of the “ Ashburton line”’ 
were continued along the St. Francis River and the straight line running 
southwesterly therefrom. Surveys were made on the lakes at the head 
of St. Croix River to define the boundary between New Brunswick and 
Maine. 
The operations of the Geodetic Survey comprised reconnaissance 
and triangulation in many widely separated parts of the Dominion. 
The main net-work extends over the southern parts of Ontario and 
Quebec. A chain of triangulation to follow the Bay of Fundy has been 
begun, as a basis for the three Maritime Provinces. Another chain is 
following a course parallel to the International Boundary, from Lake 
Superior westward and another is in progress along the British Columbia 
coast. 
