. Narrative of the Arctic land expedition to the mouth of the Great Fish River and along the shores of the Arctic Ocean in the years 1833, 1834, and 1835 [microform]. Scientific expeditions; Expéditions scientifiques. i i !â <â .... 156 JOURNEY TO THE SHORES of seventy feet diameter. It was situated on a gentle rise, two hundred yards from the lake, and about one hundred from the east end of the house. A strong staif, fifteen feet high, was fixed on the northern extremity of the ridge pole, on the spindle of which was a vane; and besides white poles, placed in the direction of the true and
. Narrative of the Arctic land expedition to the mouth of the Great Fish River and along the shores of the Arctic Ocean in the years 1833, 1834, and 1835 [microform]. Scientific expeditions; Expéditions scientifiques. i i !â <â .... 156 JOURNEY TO THE SHORES of seventy feet diameter. It was situated on a gentle rise, two hundred yards from the lake, and about one hundred from the east end of the house. A strong staif, fifteen feet high, was fixed on the northern extremity of the ridge pole, on the spindle of which was a vane; and besides white poles, placed in the direction of the true and magnetic meridian, I had a horizontal cross at the north side of the observatory, within the fence, to enable us to take the bearings of phe- nomena with greater accuracy than can be attained by the mere guess of the eye. The angular heights of the surround- ing mountains were also Na Observations were immediately made for the magnetic force and dip, with Hansteen's and Dollond's needles, and a lozenge-shaped one after the suggestion of Captain Beechey; but this, for the sake of clearness, will, together with our observations of other phenomena, be thrown into a tabular form in the appendix. Three thermometers (spirit) were placed inL>ide the observatoryâfour outside, on the north, and one exposed to the sun on the south side. They had been previously compared, and for some time their relative means were taken; but afterwards that plan was relinquished, and the nearest mean thermometers Were adopted as standards for the whole. The daily-variation instrument, made by Jones, on a plan of Professor Christie's, to be explained here- after, was also adjusted in the magnetic meridian, and its readings registered ten times a day, between eight in the morning and midnight The temperatures were noted fifteen times in the twenty-four hours. A short time after the needle was placed, there was a strange appearance connected with the aurora, and which, though it will
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Keywords: ., bookcentury1800, booksubjectscientificexpeditions, bookyear1836
