el E 
342 C. A. Schott on Magnetic Declination. | 
ison impracticable. The station Sitka, in Russian Am ica, is 
the next place discussed north of Washington Territory. [ | 
find for it the approximate form ula, 
D= —28°'12—0-0607n—0:00025n2, 
It depends for its latest soenaes (1858) on the tabular ve 
assigned by Mr. Evans on his late ma ap of the lines of ed | 
magnetic variation sedoced. to 1858. 
Record of all observed declinations made use of tn the above pape, | 
not heretofore published in the U. S. Coast Survey reports. 
The following record, containing only additional pages 
we have to consult the preceding reports of 1854,* i 
penn: A, 
geen with the stations on the western coast. D=0 
declinat 
ors k Fort, Hudson Bay i; 
m the Proceedings of the —— Society of London for January 
"1858, by Major a, Sabin A 
1725 D=19° 00’ W. " Capt, Middleton. 
17 87, u 00 “  Hansteen’s map. 
1819, Sept., 6 00 E. Sir J. Franklin. 
1843, July, 9.25 « Capt. Lefroy. 
1857, Aug., cay igs Capt. Blakiston. . 
gee Canada. : 
1649 D=16° 00’ W.  P. Bressau, Hansteen’s Erdmag’s Bate 
low Cycl. Met. vs es 
1686, 15 30 “ DeHayes “ 
1810, 11 00 « Becquerel, traité du magne —_ ae 
1814, Tl 50 “.- Kent, ad traité du magne 
1831, 13 38 “  Bayfie I 
1842, 14°12 “ Qa e 
1859, July, 16 17 « Che. A A. Sot, Asst. U. 8. Coast Surv 
Burlington, Vt. 
former observations i in 1855 report, pp. 326-337. 
37, = 8°45’ W. Prof. Benedict. Vermont — 
1840, 9 7 « J. Johnson, Thompson's Hist. of Knowl 
1845, June, » 22°" De J, Locke, Smiths. Contrib. to 
edge, vol. iii, 1852. 1 
Portland, Me. 1838, : 
1763, D= 7° 45'W. J. Winthrop, Siil.’s isa xxxi¥, q 
ae Prof. Loomis’s collection : 
ue 8 30 “ J. F. DeBarre’s Atlantic Neptun® Loe 
781. 
inte 
The table of the ted and enlarged 
mean of onelag declinations in that report is reprin : 
