494 EDITOR'S NOTES. 



combination ; and when to this complexity at one 

 station is superadded the additional complication of 

 the diversity of the action of the same forces at different 

 stations, an amount of intricacy is produced, which has 

 caused the earlier method of investigation, by the com- 

 parison of term-day observations, to yield latterly so 

 little fruit in proportion to the labour which has been 

 bestowed in the accumulation of materials. By the 

 substituted method, and by taking the stations sepa- 

 rately, the intricacies are unravelled ; and each of the 

 six laws is found to admit of separate determination. 

 Although the three stations already named, at which 

 this has been accomplished, are too few and too far 

 between to furnish an adequate basis for generalisation, 

 yet, the measure of success already obtained gives us 

 full reason to believe, that by perseverance in the path 

 which has been opened, we have a fair prospect of dis- 

 cerning the mutual relations which cannot fail to belong 

 to forces having the same origin, as well as of distin- 

 guishing more clearly than we are at present able to do 

 between forces which have distinct sources ; and thus of 

 completing the " triumph of science " which was antici- 

 pated by the great geometrician. 



Already the very recent addition of the disturbance 

 laws of but a single element (the declination) at a new 

 station, Point Barrow (Phil. Trans., 1857, art. xxiv.), has 

 made known a mutual relation, of a most remarkable 

 and suggestive character, existing between the pheno- 

 mena at Toronto and Point Barrow, the laws of the 

 easterly deflection at the one station being found to 

 correspond at the same local solar hours with those of 

 the westerly deflections at the other station, and vice 



