TABLE OF CONTENTS. XI 



TABLES FOR DETERMINING HEIGHTS AND CONVERSIONS 

 'p^gLE INVOLVING GEOPOTENTIAL. PacF 



Determination of heights by the barometer. EngHsh measures. 



51 Values of 60368 [1 + 0.0010195x36] log. -—— .... i^-? 



D 



52 Term for temperature 137 



53 Correction for gravity and weight of mercury 139 



54 Correction for an average degree of humidity 141 



55 Correction for the variation of gravity with aUitude . . . 142 

 Determination of heights by the barometer. Metric and dynamic 



measures — 



56 Vahies of 18400 log ^—^ 143 



57 Values of 18400 log — ^^ 144 



58 Temperature correction factor (a = .00367^) 146 



59 Temperature correction (o.oo367^xZ) 147 



60 Correction for humidity 148 



61 Correction for humidity. Auxiliary to Table 58 150 



62 Correction for gravity and weight of mercury 152 



63 Correction for the variation of gravity with altitude . . . 153 



64 Heights reduced from meters to dynamic meters, the- acceleration 



of gravity at sea level being 9.80 154 



65 Corrections to Table 64 for values of the acceleration of gravity 



at sea level different from 9.80 155 



66 Normal value of the acceleration of gravity at sea level • ... 155 



67 Heights reduced from dynamic meters to geometric meters, the 



acceleration of gravity at sea level being 9.80 .... 156 



68 Corrections to Table dj for values of the acceleration of gravity 



at sea level different from 9.80 157 



69 Difference of height corresponding to a change of o.i inch in the 



barometer. English measures 158 



70 Difference of height corresponding to a change of i millimeter in 



the barometer. Metric measures 159 



Determination of heights by the barometer — 



71 Formula of Babinet 160 



Barometric pressures corresponding to the temperature of the 



boiling point of water — 



72 English measures 161 



73 Metric measures 161 



