APPENDIX D XCI 



to be done on this line, but the final inspection of the monuments and 

 the completion of the triangulation across the Coast Eange. 



Operations have been begun on the i9th parallel east of the moun- 

 tains, including a re-survey of the line, under triangulation control, the 

 renewal of the original monuments and the placing of additional ones 

 where needed. 



On the Eastern Section, the sui-vey and re-monumenting have been 

 completed from the Eichelieu River to Hall Stream, covering the whole 

 of the northern boundary of the State of Vennont. The line has been 

 aligned and measured, the old monuments, when in good condition, re- 

 set, and new ones placed at many intermediate points. The line has 

 been levelled over, and a plane table survey made of the adjacent coun- 

 try on each side of the line. Preparations are being made for a similar 

 re-survey this season, of the line between Maine and New Brunswick. 



The progress of the triangulation of the Geodetic Survey during 

 the season of 1907, was very satisfactory. The various branches of the 

 survey, including reconnaissance, signal building, angle-observing, and 

 levelling are now thoroughly organized and in the hands of assistants 

 trained for precise work. 



Angle measurement has been completed over the territory lying 

 between the Ottawa and St. Lawrence Rivers, from the easterly boundary 

 of the Province of Ontario to a line some miles west of Ottawa City. 

 In accuracy the observations conform to modern standards. A base line 

 has been laid out near Coteau Junction, several miles in length, which, 

 however, has not yet been measured. 



The area so covered is nearly four thousand square miles. A 

 similar area, on either side, in Quebec and Ontario, has been prepared 

 for obsei-vation by the erection of observing towers. It is intended to 

 proceed with the observations over this area at once. Connection will 

 be made at Montreal and the Richelieu River with the triangulation 

 carried by Captain Anderson, of the Department of Militia and Defence, 

 from ]\Iontreal south-eastward. The U. S. Lake Survey triangulation 

 has been connected with the Niagara peninsula and a triangle thrown 

 across the lake to the vicinity of Toronto. 



Reconnaissance has been completed for a chain of quadrilaterals ex- 

 tending from Quebec to London, Ontario, and for a network covering 

 the southern part of the Province of Quebec, between the St. Lawrence 

 River and the 45th parallel. Reconnaissance has also been made in the 

 Provinces of New Brunswick and Nova Scotia. 



