36 



Walter Gyllenborg 



Fig. 10. 



Velocity-ellipsoid from radial velocity observations of blO stars of spectral types B and A. The 

 black star and the dotted line indicate the position of the Milky Way, and the numbers the lengths 



of the axes. 



Fig. 11. 



Velocity-ellipsoid from radial velocity observations of 445 stars of spectral types F and G. 



