Observations upon Magnetic Variations. 



Ill 



MAGNETIC VARIATION AS OBSERVED IN THE SURVEY 

 OF THE TRACT OF THE HOLLAND LAND COMPANY, 

 OF WESTERN NEW YORK, IN 1798 AND 1799. 



PLACE. 



Range 1, Township 8-9, 



" 2, " " 



1, 



2, 

 3, 

 4, 

 5, 

 2, 

 3, 

 4, 



3, 



4, 



5, 

 1, 



1, 



2, 

 1, 



2, 



4-5, 



4-5, 



4-5, 



4-5, 



2, 



4, 



3, 



7V8 



8-9, 



9-10,. 



11-12,. 

 10-11,. 



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9-10,! 



9-10,". 

 10, . 



10, . 



11, . 

 10-11,. 



Shore of Lake Ontario : 



Township 15 Willink's strip, E. line, 



15, " " W. line, 



Tonawanda Reservation, N.W. cor., 



On Lake Erie, Monument, lat. 42° 16' 16" W. 



Buffalo Reservation, Lake shore, 



Old Kana-andea (Caneadea), 



G-ardeau Reservation, 



Sauawkey Hill Reservation, 



Big Tree Reservation, 



Canawagus Reservation, 



On Lake Erie, W. line of State, 



" " 14 Range, 3d mile, 



" " 13 " 6th mile, 



" " 11 " lstmile, 



" " 9 " lstmile, 



On Lake Ontario, 1 R., E. transit, 



" " 3d meridian, 



" " 4th meridian, 



Range 9-10, Township 2, . 



9-10, 

 " 9-10, 

 9-10, 

 Range 13, 



" 11, 



« 10, 

 " 10, 



" 9, 

 " 9-10, 

 " 10, 



3,.. 

 4,.. 

 5,.. 



5-6, 

 5-6, 



5-6,. 

 5-6, 

 6-7, 

 7,.. 

 7-8, 



(S. end). 



Lake Erie, and line of Township 7-8, 

 Range 3-4, Township 7-8, 



3-4, 

 3-4, 

 1-2, 

 1-2, 

 1-2, 

 1-2, 



3, 



4, 



1, (Pa. line) 



2,7......... 



2 



Variation. 



0°40' W. 



50 W. 



1 14 W. 



1 5 W. 

 5 E. 



2 5 W. 

 30 W. 

 10 E. 

 2 5 E. 

 30 W. 



30 W. 



1 45 W. 

 1 45 W. 

 1 10 W. 



40 W. 



1 28 W. 

 20 W. 

 40 W. 

 15 W. 

 30 W. 

 25 W. 

 10 W. 

 15 W. 

 10 W. 

 20 W. 



45 W. 



30 W. 



1 30 W. 

 25 W. 



30 W. 



1 00 W. 

 1 35 W. 

 00 



15 W. 



1 00 W. 

 25 E. 

 20 E. 

 20 E. 

 42 E. 



44 E. 



1 00 W. 



20 W. 

 4 45 W. 



1 00 E. 

 55 

 50 

 30 

 35 



40 



1 15 

 1 10 

 40 

 30 

 45 

 45 

 10 W. 

 15 W. 

 25 W. 

 35 W. 

 45 W. 

 40 W. 

 45 W. 



Date. 



1799, 



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 li 

 II 



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" Feb'V,' ! 

 1790, Aug. 23. 

 1798, 



" Sept! "6, 



" Sept. 18, 



" Sept. 24, 



" Sept. 30, 



" Aug. 30, 



1799, 



It 



a 



1798,!!!!!!! 



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a 



" Aug.'>', 



Observer. 



James Dewey. 



John Thompson. 

 Andrew Elliott. 

 Augustus Porter. 



James Smedley. 



Amzi Atwater. 



