54 



C. V. L. Chnrlier 



Plate VT, fg. Via gives the coordinates of the giobulars in the XZ-plane, 

 having the sun at the origin. 



Plate VI, fig. VI h gives the coordinates of the giobulars in the YZ-plane, 

 having the sun at the origin. 



Plate VII gives a copy of Bailey's photograph of the Milky Way in Sagittarius 

 and Scorpius in H. A. 60. Upon this photograph are projected the globular clusters 

 designed by red crosses. The course of the XZ-plane of the Galaxy is indicated 

 by the straight dotted line. 



The hiding function of the dark nebula along the Galaxy is plainly shoM^n. 



(Printing finished May 3. 1918.) 



