160 
EASTMAN. 
Table II. 
Author. 
Date. 
Number of stars 
used. 
Deduced position of 
apex. 
solar 
Epoch. 
Right as¬ 
cension. 
Declination. 
O 
O 
Herschel_ 
1783 
14 
260.6 
+26.3 
u 
1805 
6 
245 
/ 
52.5 
49 
CO 
OO N. 
u 
1806 
36 
Gauss_ __ 
259 
10 
30 
50 
Argelander _ 
1838 
390 
259 
51.8 
32 
29.1 
1792.5 
Lundahl_ 
1840 
147 
252 
24.4 
14 
26.1 
1792.5 
O. Struve_ 
1841 
392 
261 
21.8 
37 
36.0 
1790 
Galloway __ 
1847 
78 
260 
0.6 
34 
23.4 
1790 
Madler 
/ 1848 
\ 1856 
2,163 
261 
38.8 
39. 
53.9 
1800 
Airy- 
1859 
113 
256 
54 
39 
29 
1800 
CC 
1859 
113 
261 
29 
24 
44 
1800 
Dunkin_ 
1863 
1,167 
261 
14.0 
32 
55.0 
1800 
C C 
1863 
1,167 
263 
43.9 
25 
0.5 
1800 
Stone 
1863 
91 
U 
1863 
91 
Gylden 28 _ 
1872 
274.1 
Gylden 29 _ 
1877 
260.5 
1800 
JDe Ball_ 
1877 
67 
269.0 
31.9 
1860 
Rancken _ 
18821 
106 
285 
8.3 
31 
52.1 
Bischof_ 
1884' 
480 
285.2 
48.5 
1855 
Ubaghs 30 _ 
1886 
464 
262.4 
26.6 
L. Struve_ 
1887; 
2,509 
273.3 
27.3 
1805 
Mean 
263° 
53 / 
32° 
35' 
Sj 
SJ 
r ci f-i 
o3 
5 O 
1.117 
0.3392 
1.269 
1.912 
0.3346 
0.4103 
0.434 
0.341 
(9.79) 
0.3367 
0.4364 
0 // .3760 
28 Gylden, Hugo. Antydningar om lagbundenhet i Stjernornas rOrelser 
(Ofversigt af Kongl. vetens kaps Akademiens FOrhandlingar, 1871, Ho. 8.) 
Stockholm, 1872. 
29 Gylden, Hugo. Grundlebren der Astronomie. Leipzig, 1877; 388. 
30 Ubaghs, P. Astronomische Nachrichten, 2733; 355. Bulletin de 
l’Academie Boyale des Sciences de Belgique, 1887, 3© series, Tome XIII; 66. 
In this incomplete review, altogether too brief for the im¬ 
portance of the subject, but, I fear, long enough to weary 
your patience and dull your interest, I have endeavored to 
outline the methods and the results of the labor of a century 
