BAROMETRICAL MEASUREMENT OF HEIGHTS. DIPPE. 



405 



Table IV. for C. 



CORRECTION IN TOISES FOR THE CHANGE OF GRAVITY IN LATITUDE. 

 In coni]niting Ilciglits, reverse the signs of C. Arguments (p and u. 



Latitude. 



10 

 15 

 20 

 25 

 30 

 35 

 36 

 37 

 38 

 39 

 40 

 41 

 42 

 43 

 44 

 45 



Approximate Difference of Level, in Toises. 



2.6 

 2.6 

 2.4 

 2.3 

 2.0 

 1.7 

 1.3 

 0.9 

 0.8 

 0.7 

 0.6 

 0.5 

 0.5 

 0.4 

 0.3 

 0.2 

 0.1 

 0.0 



Table V. for C". 

 Arguments t and T — T'. To be used only in coijipiiting Heights. 



T — T' 

 Reaumur 





 1 

 2 

 3 



4 

 5 

 6 

 7 

 8 

 9 

 10 



Correction for T — T , in Toises, witli the same sign ; t = 



0.0 

 0.1 

 0.2 

 0.3 

 0.4 

 0.5 

 0.6 

 0.7 

 0.8 

 09 

 1.0 



0° 



0.0 

 0.1 

 0.2 

 0.2 

 0.3 

 4 

 0.5 

 0.6 

 0.6 

 0.7 

 0.8 



Correction for T — T' with contrary .'ign ; r — 



+ 6° 



0.0 

 0.0 

 0.0 

 0.1 

 0.1 

 O.I 

 0.1 

 0.2 

 0.2 

 0.2 

 0.2 



T — T' 



9 

 10 



+ 14<: 



0.3 

 0.3 

 0.4 

 0.4 

 0.4 



D 



6.5 



