40 
ASTRONOMY: C. D. PERRINE 
ties prompted the making of separate solutions from northern and 
southern stars, the results of which are given in Table II. 
TABLE II 
Proper Motions 
NORTH 
SOUTH 
A D 
SPECTRAL CLASS 
A 
D 
X 
Y 
z 
A 
D 
X 
Y 
z 
N-S 
(all 
(all +) 
(all — ) 
(all +; 
(all +) 
(all — ) 
2.9 and brighter 
All classes 
260?0 
26?0 
+27.3 
155.3 
77.1 
255?4 
21?6 
+ 26.6 
101.8 
41.6 
+ 4?4 
B 
281.5 
46.4 
— 3.3 
16.3 
17.4 
269.4 
26.2 
4- 0 4 
34.5 
17.0 
+20.2 
A, F. G 
Large 
258.0 
35.6 
+48.0 
228.0 
167.0 
263.7 
11.2 
+ 39.0 
356.0 
71.0 
+24.4 
Medium 
256.3 
36.8 
+ 6.3 
25.8 
19.9 
227.9 
(56.6) 
+ 29.8 
32.9 
67.3 
(-19.8) 
Small 
262.2 
59.4 
+ 2.4 
17.2 
29.4 
264.5 
40.1 
+ 3.2 
33.6 
28.5 
+ 19.3 
Large 
255.4 
17.9 
+46.0 
178.0 
59.0 
256.9 
3.9 
+ 31.0 
131.0 
9.0 
+ 14.0 
Medium 
269.8 
46.4 
+ 0.2 
58.9 
•61 .8 
245.5 
35.9 
+ 14.6 
31.9 
25.4 
+ 10.5 
Small 
267.6 
72.4 
+ 0.5 
12.2 
38.8 
282.2 
66.2 
— 3.2 
14.7 
34.1 
+ 6.2 
Mean 
42.6 
32.7 
+ 9.6 
Omitting ( ).,. . 
29.3 
+ 13.8 
Adams'500 R.V. 
Large 
279.8 
33.6 
-56.0 
323.0 
218.0 
275.8 
35.9 
- 63.0 
626.0 
455.0 
- 2.3 
Medium 
281.9 
35.4 
- 8.1 
38.2 
27.7 
202.8 
18.7 
+ 115.2 
48.5 
42.2 
+ 16.7 
Small 
279.4 
70.7 
- 1.2 
7.2 
20.9 
230.9 
50.9 
+ 6.0 
7.4 
11.7 
+ 19.8 
nr Obs. 0^06 
253.7 
47.9 
+97.0 
332.0 
383.0 
258.0 
24.9 
+ 186.0 
871.0 
414.0 
+23.0 
These results disclose, if we omit one abnormal southern D, quite 
consistent differences similar to those between the results from radial 
velocity and proper motion for all portions of the sky. From these 
1194 stars of the spectral classes B, A, F, G and K, the average of the 
apices from the proper motions of the southern stars agrees closely with 
the apices from the radial velocities of the same stars, but there is a 
difference of over 20° for the northern stars, as follows: 
D 
MORTHESN 
SOUTHERN 
degrees 
+43 
+21 
degrees 
+29 
+26 
P.M.-R.V 
+22 
+ 3 
