222 



REPORT — 1895. 



Table VIII. 



The tables by Dr. Stewart and Mr. Ellis both give April as the month 

 in which occurs the largest maximum in the declination range. Dr. 

 Stewart's table gives slightly smaller, and nearly equal, maxima in June 

 and August. In Mr. Ellis's table the mean range for August is decidedly 

 higher than the mean for June, which latter, however, is a shade higher 

 than the mean for May and decidedly higher than the mean for July. 

 Again, the difference between the maximum and minimum ranges of 

 declination in Table VIII. is much greater than in either of the other 

 tables referred to. Thus, by Table VIII., the corrected range varies from 

 12''23 to 3'"97, while in the general mean of the monthly results from the 

 thirty-seven years included in Mr. Ellis's table the extremes are ir"96 

 and 5'"78, and in Dr. Stewart's table the ratio of the maximum to the 

 minimum monthly range is only 2:1. 



Dr. Stewart's table is confined to declination, but Mr. Ellis gives 

 results for the range of horizontal force as well. The general means he 

 gives for the four months, April to July, are very nearly equal ; the 

 greatest value, that for April, being about 2 per cent, only in excess of 

 the least of the four, that for May. The difference between the greatest 

 and least of the mean monthly ranges of horizontal force in Mr. Ellis's 

 table is again much less than the corresponding difference in Table VIII., 

 the minimum, appearing in December, bearing to the April maximum 

 the ratio 42 : 100. 



The most conspicuous difference between Table VIII. and the results 

 of Dr. Stewart and Mr. Ellis is that it shows no trace of a maximum of 

 activity in April, and indicates markedly increased activity in August. 

 It would, however, be precipitate to assume that the time of maximum 



