294 Variation and Dip of the Magnetic Needle. 
have been 43’ E. 1809. Other observations about the same time 
made it 23’ E. In 1694, the variation was 5° W. At Norfolk, 
lat. 36° 51’, long. 76°, he found no variation in 1809. At Rich- 
mond, lat. 37° 27’, long. 77° 25’, nearly 57’ E. In 1728, on the 
boundary between Virginia and North Carolina, lat. 36° 31’, long. 
76°, nearly, the variation was settled at 3° W. In 1752, at Cape 
Henry, lat. 37°, long. 754°, the variation was 4° 40’ W. 
Jonathan Price, of Newbern, N. C., lat. 35° 7’ N., states the va- 
riation of the needle to have been there, in 1796, 2° 40’ E.; in 
1806, it was less than 2° E., and in 1809, he found it 1° 45’ E. 
Jared Mansfield, Surveyor General of the United States, gives 
the following observations ; 
“S$. E. corner of Western Reserve, lat. 41° 
#3 
long. 80° 37’ W., variation, 1°21’E. 
10 miles —_ on the _ parallel of alia ef 1 37 
20 3 1 48 
33 tc 4 ‘cc & 2 4 
43 ¢ 6 6s 6 2 92. 
57 6c 3 “ 66 2. 30 
123 74 6c (6 &“ 3.57 
In latitude 40° 55’ and longitude 81° 48’, “ 2 36 
Marietta, lat. 39° 25’, long. 81° 26’ W. ae 2.36 
Detroit, lat. 42°. 30’, long. 82° 56’, 4 2 48 
Rapids of the Beak lat. 41°. 30’, long. 
83° 30’, . 3 25 
Fort Defiance, lat. 41° 15’, long. 849 23, « A 30 
Cincinnati, lat. 39° 7’, long. 84° 27’, 4 5 0 
Mouth of Miami River, lat. 39° 8’, long. 
84° 45/, 6 5 10 
Latitude 38° 45’N., longitude 85° 15/ W., 5 25 
Latitude 38° 10’, longitude 86° 307, 6s 30 
Near the Falls of the Ohio, lat. 38° 20’ N., 
long. 85° 40’ W., es 5 50 
Vincennes, lat. 38° 12, long. 87° 20, “ 6 45 
11 nee north of the mouth of the Wabash 
6 7 10 
Riv 
Mouth of the Ohio River, lat. 37° 4’, long. 
89° W.., 
7 20 
, IL, lat, 38° 36’, long. 90° ¥, «, 8 25 
