ELEVATIONS 223 



Height of Algonquin Beach Southeast of Lake Huron 



Grand Bend 602 (Spencer). 



Southampton 714 ( Spencer) . 



Weybridge 842 ( Spencer) . 



Holland Landing . . 752 (Goldthwait). 



Rosedale 891 (Goldthwait). 



Kirkfield 875 ( Spencer). 



In the following triangles the mean direction and rate of deformation 

 in feet per mile have been calculated to be : 



1. Hamilton, Lewiston, Scarboro 2 feet, N. 22° E. 



2. Lewiston, Rochester, Colborne, Ontario 2.5 " N. 17° E. 



3. Rochester, Sodus, Trenton 3.6 " N. 10° E. 



4. Sodus, Rome, Richland 5 " N. 4° E. 



5. Rome, Herkimer, Richland 4.5 " N. 



6. Sodus, Herkimer, Watertown 5.5 " N. 2° E. 



7. Richland north toward Watertown 6 " N. 



8. Adams Center north toward Watertown 6 " N. 



9. Rome, Herkimer, Watertown 5:1 " N. 2° 



10. Rome, Watertown, Parishville 5.5 " N. 22° W. 



11. Rome, Herkimer, Parishville 4.4 " N. 



12. Richland, Watertown, Parishville 6 " N. 23° W. 



13. Grand Bend, Southampton, and Rosedale 1.3 " N. 35° E. 



14. Holland Landing, Wyebridge, and Rosedale.. 3.4 " N. 23° E. 



15. Bradford, Owen Sound, Wyebridge , 3.1 " N. 27° E. 



16. Adjacent to Kirkville 5 " N. 



By plotting these lines of direction on the map, those drawn from the 

 lowest points of the triangles converge to a focus near latitude 49° north, 

 longitude 76° west, while those drawn from the more eastern points of 

 the triangle will be seen to converge at points beyond the first focus, as 

 far as latitude 50° 30', longitude 75° west. These points are, conse- 

 quently, the foci of maximum uplifts as determined more than twenty 

 years ago. 



It is interesting to find that certain physiographic features confirm 

 these computations, for near this dome rivers are found radiating in 

 different directions in conformity with the hypothesis. Thus we find the 

 source of the Ottawa River is near one of the foci, from which it flows 

 westward for nearly 200 miles parallel to the "height of land" before 

 turning southward, as shown on the map. The Gatineau and Saint 

 Maurice rivers flow southward from the same district, while the upper 

 waters of the Chamouchouan flow northeastward from the same region, 



7 520 feet, according to Fairchild. 



