CORRECTION OF THE HEIGHT OF THE BAROMETER^ 85 



+ -000 000 200 ^- 

 m 



x 1 * 

 + -000 000 004 94 -7- 



nt ' 



ao 



f -000 000 000 10 ~ 

 nr 



J." 



4- -000 000 000 0016 — - 

 + . . . ) b 3 



-H2*' 



4- 1-09 375 — 

 m 



+ (Sx* 



x 10 



+ 4-2 — 



m 



+ -275 514-2- 

 m 



+ 1-87675 -* 

 m 



x l% 

 4- -042 665~t 



■ + • • • ) & 



x 14 

 + '003 920 ? — 



+ (14x x0 



x l * 

 4- '000 261 ? -^ 



x li 



4- 16-04167 — 



m 



x li 



+ -000 0137 ?-t 



mr 



+ . • • ) & 



+ -000 000 55 ? — =- + 42 x l * b 11 -f . , « 



m 7 



4- -000 000 018 2?— = 

 m* 



4- • • • ) 6 5 



In this manner the following table has been calculated, Table of the 



m being still made -005, and n = -00375 ; and it may in de P r83sioa rf 



P _ J mercury; 



general be considered as accurate to the last place of the 



decimals laid down : the depression is also determined ac- 

 cording to the experiments of Mr. Gay Lussac, in which 

 m appeared to be -0051, n being still -00375. In applying 

 the correction to a given barometer, the bore might be as- 

 certained by measuring the difference of the central and 

 marginal depressions with a micrometer, and comparing it,. 

 with this table, without the trouble of emptying the tube. 



Diameter 



