In 1906 and 1907, W. Thibaudeau, C.E., acting under the instruction of Doctor Deville, Surveyor-General, made some explorations in Churchill district and along the route of the proposed Hudson Bay Railway from Churchill to The Pas on the Saskatchewan. On his trip over the route of the railway Mr. Thibaudeau proceeded from Churchill in a straight line to near Deer river. Crossing the river he followed a route between it and the Churchill, recrossing the Deer at a point a little more than a hundred miles from Churchill. Thence he travelled in a straight line to the Little Churchill, and followed the course of that river to Waskaiowaka lake. Thence he crossed to a point near Assean lake and continued his route via Split lake, Pipe lake, Grass river, Landing lake, Sipiwesk lake, Grass river, and Cormorant and Atikomeg lakes. Mr. Joseph Keele of the Geological Survey of Canada made a reconnaissance across Mackenzie mountains on Pelly, Ross and Gravel rivers, in the mountain region lying between the Pelly and the lower reach of Mackenzie river in 1907 and 1908. During the summer of 1908, Inspector E. A. Pelletier, of the Royal Northwest Mounted Police, with a corporal and two constables, patrolled the country between GREAT SLAVE LAKE AND HUDSON BAY. They left Fort Resolution on Great Slave lake on July 1 and travelled via Pike portage, Artillery lake, Hanbury river and Thelon river, to Hudson bay at Chesterfield inlet, where they arrived on August 31. No natives or guides were employed from Great Slave lake to Hudson bay and this portion of the journey was made without any mishap whatever. Inspector Pelletier estimated the distances travelled on this patrol as follows:—