m * ON THE HEIGHT OF THE 



day, nor during the whole feafon fo much as two tenths for the fame 

 hour of the day. 



The la ft of the two methods propofed feems therefore preferable^ 

 as the barometer is fhown by the journal kept at Cat'hmdndu to be as 

 little variable in Nepal 'as it is in the plains of India; and contemporary 

 obfervations at places very remote (no other could be found) would 

 produce no greater degree of accuracy, fince a like Rate of the atmof- 

 pherein refpecl of elaiticity, o? in regard to humidity and other circum» 

 fiances affecting its denfity exclufiye of tempeiature, is hardly to be 

 prefumed to prevail through an expanfe of many hundred miles be- 

 tween places fo differently fituated j the One on the open plain, within 

 the reach of influence of the fea, the other in the midft of mountains, 

 at the foot of the loftielt alp?. I fhall therefore take the mean height 

 of the barometer in Bengal, towards the end of February, or 30 inches s 

 and the obferved height at the fpring of Chifdfdni at the fame feafon 

 of the year 24.43 : and in like manner, the mean length of the column 

 of mercury for both Calcutta and Cat'hmdndu, in the winter feafon, when 

 the mean temperature at the one place as much exceeds the zero of the 

 fcale adapted to the meafurements of heights, as it is fhort of it at the 

 other. This appears to be 68° at Calcutta and 52 at Cat'bmdndui the 

 mean of both, or 6o°, differing by lefs than i~° from the zero of the 

 fcale. The correfponding lengths of the column, of mercury arc 30 oj : 

 and 25. 28 refpeftivelyy 



Proceeding on thefe grounds to calculate the heights of the places* 

 we find from the difference of logarithms j* 7531 French toifes or 803 

 Englifh fathoms in one inftance, and 892 French toifes or 950! Engljfh 

 ras on the other : needing little conectlon for the difference of 



* Ds Luc. Mod, dc i'atmofphei 'i § 576 anJ djr. 



