. Narrative of a journey to the shores of the Polar Sea, in the years 1819, 20, 21, and 22 [microform]. Scientific expeditions; Expéditions scientifiques. m TABLE I. OBSERVATIONS ON THE MAGNETIC-NEEDLE, ^T , HUDSON'S BAY, JUNE II, 1820. Bv LIEUTENANT ROBERT HOOD, In the month of Febniary 1830, an Azimuth Compass was fixed in the open air, with a nmall minutely-divided metal arch un the edge of the card ; and the diurnal variation of the needle was ascertained ar noted in the folluwinir table. Many interruptions prevented a more complete series of observaticms; and the _ n
. Narrative of a journey to the shores of the Polar Sea, in the years 1819, 20, 21, and 22 [microform]. Scientific expeditions; Expéditions scientifiques. m TABLE I. OBSERVATIONS ON THE MAGNETIC-NEEDLE, ^T , HUDSON'S BAY, JUNE II, 1820. Bv LIEUTENANT ROBERT HOOD, In the month of Febniary 1830, an Azimuth Compass was fixed in the open air, with a nmall minutely-divided metal arch un the edge of the card ; and the diurnal variation of the needle was ascertained ar noted in the folluwinir table. Many interruptions prevented a more complete series of observaticms; and the _ n. will serve cmly to shew the amount in general, and the direction of the variation. EASTERLY VARIATION. FEBRUARY , 1820. MARCH. Days. Noon. I 4 8 l>ay>. 9 Noun. 1 P. M. HP. M. la o ; O 1 O / 0 / 0 I 1 1 17 17 17 14 17 12 17 14 17 10 a 2 17 14 17 11 17 14 17 15 17 16 3 3 17 17 17 14 17 15 17 17 17 17 4 4 17 18 17 14 17 13 17 17 16 45* 6 5 17 14 17 12 17 12 â â . 17 IG 6 6 17 14 17 8 17 8 17 13 16 3S* 7 7 17 13 17 7 17 7 17 10 17 10 8 8 17 13 17 6 17 7 17 10 17 13 9 9 17 14 17 8 17 9 17 11 17 13 10 10 17 14 17 8 17 9 .... 16 3.;* 11 o / o # 0 ' 0 / 0 / 11 17 14 17 6 17 4 17 8 17 32 12 17 8 , . . 17 8 17 10 12 17 13 17 8 17 8 17 10 17 12 13 17 17 17 9 , 17 7 , , , , 17 13 13 17 14 17 10 17 10 .... 17 13 14. 17 16 17 13 . 17 8 . . , 17 11 14 17 15 17 10 17 12 17 12 17 12 15 17 17 17 8 17 9 17 9 17 9 15 17 15 17 9 17 9 17 10 17 11 16 17 17 17 13 17 16 16 17 15 17 9 17 10 ⢠⢠* ⢠17 11 17 17 17 17 11 , 17 16 17 16 17 16 17 17 15 17 10 IS 17 17 17 10 17 9 17 10 17 10 18 17 15 17 9 17 9 17 13 17 15 19 17 16 17 8 o / 17 4 17 13 17 16 19 17 14 17 7 17 7 17 10 17 10 20 17 15 17 11 17 9 ⢠. , . 17 11 80 17 15 17 9 ⢠⢠⢠. 17 13 17 15 21 17 16 17 13 17 13 . , , , 17 15 21 17 18 17 10 17 11 , ⢠. 17 15 22 17 16 17 13 17 12 17 14 22 17 18 17 10 17 11 23 17 16 17 12 17 13 17 15 17 15 24 17 16 17 14 17 10 17 10 17 13
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Keywords: ., bookcentury1800, booksubjectscientificexpeditions, bookyear1823
