STUDIES IN STELLAR STATISTICS. II. 97 
| | 
: ; | 70 h ED dr, . dg 
Square Typer |, N:o U T | W = UTER 
| 
E; Bsp. | 685 — 19 | +20 — 1.1 + 1.9 TRIS 
» B 2 687 = 30) | ss r5 4 0.9 = (5 
: Bs 691 — 5.6 + 24 — 1.2 0.0 ES 
> Bep.| 694 | —68 | + 46 — 21 2435 — 2.3 
» Bs 695 | — 3.0 +01 - 1.1 18 2.0.6 
Bs 712 = 4 + 1.6 — 3.9 + 0.9 219 
> Bs 722 — 29 + 10:8 = ii 1.3 201 
» Be 730 = Öd E dg — 0.1 — (Hn o 
> BE 730 ESO 28 = 5S zog HE 
| | 
E, Bip.| 739 = 18 =i, ee + 3.6 + 5.0 
> Bs 753 SRG le NOMS | EE: + 2.1 — 9,9 
4 Bip IN 75%, Be + 2.4 — 0.5 — 1.8 — 1.0 | 
> Be 756 AOT 2007 — 1.0 + 1.7 — 0.1 
» Bi 760 S 608 + 9 + 0.0 — 0.7 — 31 | 
> Bs 768 NUS + 24 — 0.4 — 0.9 — 0.8 | 
» Bs 771 27:6 EIE — 9.6 — 1.7 086, | 
; B 3 778 = + 2.0 = 9g 13 13 
> Bs 779 — 8.5 en 05° | 470.8 04 
F, Bsp. | 788 use) 0.2 04 + 2.2 +03 | 
» | Bs 795 C REOR m ce ler ds = 20 
F, SONO ONE oh P er dca U p Iam 08 
The first column gives the square, the second the type and 
subclass of the spectre. The third column contains the current num- 
ber of the star according to table 16. In the 4", 5" and 6" columns 
are given the components of the velocity of the star, referred to the 
galactic system of coordinates, having the sun at the origin. The 7" 
and the 8” columns give the components of the velocity of the star 
parallel to and perpendicular to the radius vector from the centre as 
described in § 26 below. 
25. Frequency distribution of the velocities. For studying the fre- 
quency distribution of the velocities we may use the same method as 
has been used above for studying the frequency distribution of the 
stars themselves. 
First we compute the mean values m,, m, und m, of the velo- 
city-components. We get 
m, = M(U°) = — 3,555 + 0.165 
m, = M(V°) = + 1,856 + 0.148 
ms = M(W°) = — 1,207 + 0.107 . 
Nova Acta Reg. Soc. Sc. Ups., Ser 4, Vol. 4, N. 7. Impr. !% 1916. 13 
