138 Magnetic Observations at Cambridge, United States. 
| Gottingen Gottingen Gottingen Gottingen 
Mean Dec. | H. F. Mean Dec. | H.FE. Mean Dec. | H. F. Mean Dec. | H. F. 
Time. Time. Time. Time. 
\Jan. 15,| 1842. he om. a, ho om. 3, hm, 8 
hm. 3. 12 58 30 158.8 ||13 11 0} 148.0} 159.0 136.3 | 159.0 
12 46 36] 130.4 | 147.4 106.5 | 141.8 126.5 | 143.1 151.0 | 1420 
12 47 0| 139.8| 155.3)}12 59 0) 164.2) 155.5 148.9 | 157.7 || 13 24 0} 135.0) 156.0 
| 127.0 | 148.6 || 12 59 30! 106.3) 143.0 ||13 12 0) 128.0} 143.2 152.5 | 143.8 
| 144.4 | 155.4 164.0) 156.0 146.0 | 157.9 |} 134.8 | 156.1 
124.6) 144.0//13 0 0) 106.0) 145.3 132.0 | 141.0 ||13 25 0 | 152.0 | 143.9 
12 48 0} 146.8) 159.8 163.2 | 155.6 143.0 | 158.2 134.2 157.0 
12 48 15| 123.0} 140.8 107.0} 145.2 )}13 13 0) 134.1) 141.8 151.6 | 143.1 
12 48 30} 148.0} 162.1 |/13 0 30) 161.8] 153.1 || 13 13 30) 140.6 | 157.2 138.0 | 155.9 
12 49 0} 121.2) 141.3 108.1 | 143.4 136.1 | 142.9 ||13 26 0 143.4 
150.0 | 158.3 || 13 1 11) 159.5) 155.2 139.4 | 158.0 148.0 | 155.1 
120 8 | 144.8 109.5; 143.0)}13 14 0} 136.2) 143.1 141.1 | 145.1 
151.0 | 158.0 )}13 2 0| 157.3} 156.9 140 8 | 158.3 147.0 | 154.1 
1250 0} 120.8/ 144.9 115 2] 141.9 136.3 | 139.9 || 13 27 0) 142.0 | 146.0 
149.0 | 159.2 153.0 | 155.8 || 13 15 0} 138.8} 159.9 145.6 | 153.2 
121.2] 142.9|}13 2 30) 117.0) 141.9 138.1 | 139.5 141.0 147.7 
12 50 45) 150.6 | 160.5 149.1 | 159.0 136.1 | 160.3 147.0 | 152.1 
12 51 0/| 120.5) 141.8 141.2 136.1 | 140.3} 13 28 0} 140.0 | 146.9 
153.5] 158.8]/13 3 0] 121.2) 159.6 141.4 | 161.9 |) 148.0 | 152.0 
1148} 145.5 150.0 | 140.4|}13 16 0) 132.8) 138.8 |) 139.1 | 148.0 
160.0 | 156.5 119.0 | 161.0 144.2) 1629 148.0 | 151.3 
112.1} 145.3|/13 4 0) 151.9 |137.9 132.0 | 138.1 || 13 29 0) 138.8} 149.0 
162.8 | 157.0 119.5 | 163.8} 13 17 0} 147.5) 161.7 147.6 | 150.8 
| 107.8 | 146.0 152.0 | 139.0 131.1 | 137.2 140.5} 146.8 
112 53 0] 166.0)156.7||13 5 0) 119.4} 158.2 148.0 | 162.8|/13 30 0) 146.0) 152.1 
107.2 | 147.0 152.9 | 141.3 132.8 | 139.1 143.0 | 145.2 
| 155.8 119.0} 156.0 |}13 18 0|146 8) 159.2 145.0 | 154.6 
| 164.0 | 144.2 152 0 | 144.4 133.1 | 141.0 ||13 31 0) 140.0 | 147.1 
109.0 | 154.6/|13 6 0) 120.2] 155.0 148.0 | 159.0 147.0 | 151.8 
12 54 30| 162.4 | 147.0 151.8 | 145.4 /}13 19 0]134.8| 143.8 147.3 
109.5 | 155.3 122.5 | 152.5|/13 19 8) 144.7) 158.0 139.8 | 153.5 
162.2 |147.8||13 7 0) 148.0 | 144.9 139 8 | 144.3 || 13 32 0 146.5 | 147.6 
12 55 0} 108.6 | 152.9 124.0 | 153.9 141.5 | 155.0 139.8 | 152.8 
| 163.8 | 148.1 146.8 | 145.1 140.8 | 145.9 144.8 | 147.7 
}12 55 30 153.2 | 125.5 | 154.9 || 13 20 0) 140.0 | 153.2 || 140.7 | 151.9 
} 109.0 148.8 13 8 0| 145.0] 147.2 144.0} 148.9} 13 33 0 | 144.9} 147.9 
/12 56 0| 163.5] 152.0)|18 9 0) 126.2) 152.2 138.0} 151.1 140.9 | 150.1 
| 110.0 | 151.0 146.1 | 144.9 147.0 | 148.9 144.5 | 148.1 
150.0 124.0} 155.2 |} 13 21 0) 136 0} 154.0 /13 34 0/ 140.0} 151.5 
162.5 | 151.0 143.2 149.0 | 147.8 148.3 
12 57 0 | 108.0) 153.0 147.4 | 156.0 137.6 | 153.2 145.0 | 152.2 
164.0! 146.0 | 123.1 | 144.2 2 138.0 | 144.0 140.0 | 147.5 
12 57 30| 109.0] 156.8||13 10 0| 148.8} 156.9 || 13 2 149.5 | 156.1 |) 147.0 | 1525 
163.0 | 141.3 124.7} 140.0 135.0 | 141.7/,/13 35 0 | 139.5 | 148.4 
12 58 0| 107.4} 159.2 | 148.7 | 159.2 158.2}, 13 35 30 | 146.0 | 150.7 
164 2] 142.2) 125.2] 140.9118 23 0} 150.0 | 148.3 
Thermometer Internal, 39 6 ; Ex. 26.0. 
