The Albert N'Yanza, Great Basin of the Nile And Explorations of the Nile Sources by Sir Samuel W. Baker









 -  The result by two independent observers
was that the boiling-point had increased in its reading by 0 degree
point - Page 661
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The Result By Two Independent Observers Was That The Boiling-Point Had Increased In Its Reading By 0 Degree Point 75 In 4 And 3/4 Years, Or 0 Degree Point 172 Yearly.

On November 23d the thermometer was again tested by Mr. Baker at the Kew Observatory.

The observation was made under the same conditions as those near the Albert N'yanza, as nearly as it was possible to make it. (By immersion in boiling water.) The result gave the thermometer 0 degree point 80 too much at the boiling-point.

The readings of the thermometer have, therefore, been TOO MUCH; and by REDUCING the readings, it ELEVATES all positions at which observations were made.

Table No. 1. - In this Table the error obtained at Kew Observatory has been treated like that of a chronometer, the error being assumed increasing and regular.

Table No. 2 is to correct the height, computed by Mr. Dunkin, using the quantity taken from Table No. 1.

Table No. 3 is the final result of the observations for height, corrected for instrumental error.

TABLE No. 1.

Table for Increased Reading of Thermometer, using 0 degrees 80 as the Result of Observations for its Error.

Month. 1861. 1862. 1863. 1864. 1865. January. . . - 0'143 0'314 0'487 0'659 February . . - '157 '328 '501 '673 March . . . 0'000 '172 '344 '516 '688 April . . . '014 '186 '358 '530 '702 May . . . . '028 '200 '372 '544 '716 June . . . . '043 '214 '387 '559 '730 July . . . . '057 '228 '401 '573 '744 August . . . '071 '243 '415 '587 '758 September . . '086 '257 '430 '602 '772 October . , . '100 '271 '444 '616 '786 November . . '114 '285 '458 '630 0'800 December . . 0'129 0'300 0'473 0'645 -

TABLE No.

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