8 



ANALYSIS. OF TIIE 



ANALYSIS OP THE DISTURBANCES OF THE TOTAL FORCE. 



The number of values of total force differing 0.00094 parts of the force from its 

 normal amount, and which constitute the disturbance values, is 1470, which have 

 been combined in a manner similar to that of the disturbances of the dip ; an increas- 

 ing total force is indicated by a + sign, a decreasing one by a sign. The aggre- 

 gate amount and mean amount of disturbances are expressed in parts of the force, 

 and the letter n indicates the number of disturbances. In the tables of the annual 

 inequality the series commences with July, 1841, in those of the diurnal inequality 

 it commences with February, 1841. The ratios given are those of the aggregate 

 amount. 



