400 rm. C. CHREE: ANALYSIS OF RESULTS FROM THE KEW MAGNETOGRAPHS 
It has, however, the advantage of being equally satisfactory whether the sun-spot and 
magnetic relationship is or is not variable throughout the year. Mr. Ellis’ method 
tends to smooth down the magnetic results, and he very properly employs 
correspondingly smoothed sun-spot numbers, so that the results he obtains are certain 
a priori to present fewer irregularities than those obtained by me. The results I 
have obtained for D and H appear in Tables XXXIII. and XXXIY. In both cases 
“ramie” means the excess of the nreate-st over the least houiTv value in the diurnal 
inequality derived by combining the five quiet days of each month, the non-cyclic 
increment being eliminated. The absolute mean value of the range is given for each 
month of the year, so that the absolute values for individual months can be at once 
deduced if required. 
Table XXXIII.—Variation of Declination Eange. 
O 
(100 X mean for month ~ mean for that month for 11 years.) 
1890. 
1891. 
1892. 
1893. 
1894. 
1895. 
1896. 
1897. 
1898. 
1899. 
1900. 
Absolute 
range. 
Mean 
for month. 
Jamuary. 
92 
96 
151 
140 
144 
59 
126 
84 
64 
59 
85 
4-39 
Eeliruarv. 
104 
77 
131 
134 
146 
113 
103 
82 
79 
63 
68 
5-18 
IMai’ch. 
84 
97 
108 
135 
118 
113 
106 
102 
77 
84 
i 
9-00 
April. 
93 
86 
104 
125 
128 
116 
101 
95 
78 
96 
78 
10-08 
May. 
76 
103 
120 
130 
118 
102 
93 
87 
107 
88 
77 
11-07 
J line. 
82 
97 
126 
116 
109 
138 
93 
77 
82 
94 
86 
10-74 
•Lily. 
89 
104 
121 
125 
106 
118 
96 
89 
90 
79 
84 
10-48 
.\ugust. 
89 
93 
128 
122 
124 
111 
89 
89 
86 
85 
84 
11-02 
September .... 
75 
103 
116 
128 
116 
102 
115 
69 
90 
97 
88 
9-81 
October . 
89 
121 
128 
120 
101 
101 
98 
82 
92 
79 
89 
7-63 
November .... 
100 
138 
97 
149 
124 
91 
88 
74 
89 
75 
75 
4-90 
L)ecember .... 
101 
117 
160 
124 
113 
109 
84 
68 
78 
72 
74 
3-56 
IMea.ns for years . 
89 
103 
124 
129 
121 
106 
99 
83 
84 
81 
81 
