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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.β€”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… β€” 0β€˜143 0β€˜314 0β€˜487 0β€˜659

February . . β€” β€˜157 β€˜328 β€˜501 β€˜673

March … 0β€˜000 β€˜172 β€˜344 β€˜516 β€˜688

April … β€˜014 β€˜186 β€˜358 β€˜530 β€˜702

May … . β€˜028 β€˜200 β€˜372 β€˜544 β€˜716

June … . β€˜043 β€˜214 β€˜387 β€˜559 β€˜730

July … . β€˜057 β€˜228 β€˜401 β€˜573 β€˜744

August … β€˜071 β€˜243 β€˜415 β€˜587 β€˜758

September . . β€˜086 β€˜257 β€˜430 β€˜602 β€˜772

October . , . β€˜100 β€˜271 β€˜444 β€˜616 β€˜786

November . . β€˜114 β€˜285 β€˜458 β€˜630 0β€˜800

December . . 0β€˜129 0β€˜300 0β€˜473 0β€˜645 β€”

 

TABLE No. 2.

 

At the elevation of 3,500 feet, 1 Degrees equals about 520 feet, from

which the followingβ€”

 

Degrees Feet. Degrees Feet Degrees Feet.

1β€˜0 … 520 β€˜7 … 364 β€˜3 … 156

β€˜9 … 468 β€˜6 … 312 β€˜25 … 130

β€˜8 … 416 β€˜5 … 260 β€˜2 … 104

β€˜75… 390 β€˜4 … 208 β€˜1 … 52

 

End of Project Gutenberg Etext The Albert N’Yanza, by Sir Samuel W. Baker

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