(10 ) 
small refractor were united with half weight to those for the great 
one. Wherever in the last column two weights are given, the former 
refers to the smaller instrument. 
Observers whose personal corrections could not be deduced received 
as a rule a weight that was 1 smaller than otherwise would have 
been their due with a view to the nature of the instrument. A 
weight 3 was assigned to LEAVENWORTH, PERROTIN, PETERS and 
WarsoN; 2 to CHACORNAC, Fuss, LassELL, Martu, H. S. Prircnerr, 
RurnerForD & WAKELY, SEARLE, Upron and WINNECKE; the 
others received a weight 1. 
After applying these corrections we could pass to the formation 
of the definitive yearly means Ols.—Comp. The assigned weights 
were again of the form gn, where n was assumed as before. 
The following table contains in the first column the mean date, 
in the second the preliminary means Obs.—Comp. which have served 
for the construction of the curve of the errors referred to before, in 
the third the definitive means corrected for personal error. ‘The 
last column furnishes in the same way as before the value of 
r=(gn), 
100 
GO BI Pees MERENS Wee ee 
Date. A1 § A2 $ | p Date. | Ai} Aa 6 p 
lg | | 
1862.21 | +0°57 | +0°49 | 9.1 | 1878.12 | —0°02 +0°12 | 6.8 
1863.92 | +0.13 | +0.33 | 1.7 | 1879.13 | —0.16| 0.00 | 6.8 
,1864,90 | —0.74 | —0.93 | 2.8 | 1880.16 | +0.28 | +0.38 | 8.8 
1865.91 | —0.91 | —0.14| 9.3 | 1881.17 | 40.18 | +0.04] 9.0 
1866.91 | —0.02 | +0.10 | 9.3 | 1882.21 | —0.27 | —0.07 | 10.1 
1867.20 | +0.23 | --0.21 | 2.8 | 1883.15 | —0.14 | —0.32 | 7.5 
1868.19 | —0.42 | —0.54 | 3.6] 1884.18 | —0.46 | —0.43 | 7.2 
1869.19 | 0 00 | —0.26 | 2.2] 1885.19 | —0.91| —0.15| 4.4 
1870.17 | —0.65 | —0.73 | 3.7 | 1886.14 | —0.32 | —0.23 | 4.0 
1871.99 | —0.70 | —1.19 | 1.3 | 1887.19. | —1.12 | —1.07 | 2.8 
1872.18 | —0.03 | —Ov55-'|" 3.01 4888970) ntm #0. 164000 
1873.92 | —0.74 | —0.92 | 1.4 | 1890.275 | ...... a ee 
1874.18 | —0.49 | —0.47 | 4.2 | 1897.004 | ...... 14.138) tele 
1875.92 | —1.14 | —0.89 | 4.7 | 1897.971 | ....,. | 42.48 | 3.2 
187674 | 20.48 120229 | 0 IJ 1898 8445) oe +0 01 | 0.9 
