52 



N. W. Point of the Lake of the Woods. 



The courses from Mr. Thompson's Monument No. 1 are 

 as follow : 



1. N. 56° W. 15651 feet. 



2. N. 6" W. 8611 feet. 



3. N. 28° W. 615.4 feet. 



4. N. 27° 10' W. 595.4 feet. 



5. N. 5° lO'E. 13221 feet. 



6. N. 7° 45' W. 493 feet. 



From these courses and distances I find, supposing the va- 

 riation of the needle to be 1 2° east, that this point is 



0" 90 (time) west and ) of Mr. Thompson's Monument 

 48 33 (arc.) north 5 No. 1. 



The latitude of this point is therefore - 49° 23' 54" 81 

 And its longitude west of the Rat Portage 



station, in time, 2 22 55 



or 35" 38" 25 = 35' 6375. 



Meridional Parts for vai'ious Latitudes, near those of the 



Stations. 



Meridional Parts of the Latitudes of the Stations. 



Meridional part for the latitude of Mr. Thomp- 

 son's Monument No. 1, - - - =34 17' 441 



Meridional part for the latitude of the most 

 northwest point of the Lake of the Woods 

 in the vicinity of Mr. Thompson's Monu- 

 ment No. 1, =3418 679 



Meridional part for the station near the Rat 



Portage, . . , , . 3453 656 



Comparison of the different Stations. 



Rat Portage Station and Thompson's Monument No. 1. 



Difference of meridional parts. Difference of longitude. 



35' 215 35' 4125 



