130 



REPORT — 1898. 



equations for (X) and (Y) and from the equations for (Z) separately as 

 well as from the equations for (X), (Y) and (Z) combined, and their 

 values have been compared. Also their values have been determined in 

 each case (1) by including all the equations up to (e), i.e. between latitudes 

 67^° N. and 67^° S., and (2) by including all the equations up to (c), i.e. 

 between latitude's 77|° N. and 77f ° S. 



The following table gives the comparative values of the magnetic 

 constants in British units, as deduced from dififerent magnetic elements : — 



