83 
1905 — 6 .] Dr J. Halm on the Spectro-heliometer. 
by further observations, we have doubtless in it one of the most 
important phenomena of solar spectroscopy, the bearing of which 
on theoretical and practical questions cannot well be overestimated. 
I shall now enter somewhat more closely upon the numerical 
. 5 . 
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0.363 
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5 
6 
7 
8 
9 
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1 
1 
3 
4 
5 
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7 
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9 
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2 
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6 8 -0 2 4 -6 8 0 -2 4 - 6 8 O 2 4 6 -8 0 2 4 6 8 
1901 1902 <903 1904 1905 
evaluation of the amplitudes and the positions of the turning- 
points in the annual curves. Since between 1903 and 1905 the 
shift, of which I have spoken, has certainly been small, we may 
for the present purpose limit our attention to this period only. I 
have again arranged the complete material into groups according 
to the sun’s longitude, but now no longer separating the single 
years. The new values for each group, comprising 30 single 
