24 C. V. L. CHARLIER, 
The most prominent feature in this distribution is the relatively 
great number of B-stars in the southern skies. This irregularity is 
evidently caused by the excentric situation of the sun with regard to 
the mean stratum of these stars. We will return later to this question 
and determine, in absolute units, the position of the sun referred to 
this stratum, which may be assumed to coincide with the principal 
plane of the Galactic. 
On the plate 2 I have given the distribution of the B-stars on 
the squares represented in the projection of FrAwsTrEED. The well 
known adherence of these stars to the Milky Way is here clearly ex- 
hibited. In this diagram all stars known as belonging to the spectral 
type B and registered in the Catalogue in table 16 below are taken 
into consideration. 
I give here a survey of the results obtained for each one of 
the different subclasses. 
Table 3. Values of R and M for different subclasses. 
m U:R | V:R | Wee Q'.R R M | 
| | | 2 | 
Subclass Bo | 
< 4.99 | — 09.0499 | + 09.2727 | — 09.9273 | + 0.3588 |(12.51 | — 5.49) 
3010) = SR | = ONE TE + 2.3713 — 0.8511 + 2.529 177 — 1.25 
15,99 — 0.0011 + 1.6060 — 0.4972 + 1.681 267 | ae, Ph LZ 
Subclass Ba L | 
< 4.99 + 0.0550 + 0.4857 | — 0.0091 + 0.5253 | .54 | = 4-66 | 
5.00 — 5.99 | — 0.1652 4 0.8524 — 0.0790 + 0.8718 5-152128: 55 | 
<5.99 | — 0.0519 + 0.5815 — 0.1761 + 0.6098 | 7.36 | — 4.33 | 
| 
Subclass B 2 | 
< 4,99 + 0.0187 + 0.6667 — 0.3043 + 0.7331 6.19 | — 3.93 
5.00 — 5.99 | + 0.1114 + 0.0499 — 0.4971 + 0.5119 8.77 | — 4.71 
< 5.99 | + 0.0343 + 0.4446 — 0.4164 + 0.6101 7.36 | — 4.33 
Subclass B 3 | 
< 4.99 | — 0.0953 + 0.9416 — 0.7735 12132222 3.67 | = 282 
5.00 -- 5.99 | + 0.0679 + 1.1301 — 0.7141 + 1.3390 3.35 | — 2.63 
= 5.99 3.4220 BN 
Subelass B 5 
<4.99 | + 0.0339 + 0.9158 — 0.6424 + 1.1192 ab | = BLO) 
5.00 — 5.99 + 0.0185 + 0.9566 — 0.8596 + 1.6543 2.71 = 2.17 
5.99 + 0.0297 + 0.9408 — 0.7506 + 1.2039 3.73 | — 2.86 
— ne SER > ru €. nm 
