RS 4D 
ged corrections were applied for the supplementary periodic term 
in the following way, viz. for 1878 to 1886 according to the curve 
for 1887 to 1896 by the formula, while for 1897 and 1898 the 
correction was adopted = 0. 
The reduced rates found in this manner are contained in the 
general table of the rates given above, under the heading „Redd 
De i Ls. | 
The drawing of a curve was to a large extent arbitrary. I have tried 
to make it as simple as possible. It is reproduced in Fig. 3 5). The 
residuals O.—C. (Obs. — Curve) are given in the last column of 
the general table. 
For the years 1879 
1896 the mean error of a monthly mean 
derived from these residuals is 
Mees aot 0,028 
If the supplementary term had not been applied it would have been 
M.E. = + 08.0364 
The difference is considerable. 
1) The curves derived from the yearly means, which were previously used, agree 
with this one in the principal points, but were more complicate. 
(June, 25 1902). ‘ 
