42 



KNUT LUNDMARK, GLOBULAR CLUSTERS AND SPIRAL NEBULiE. 



1^0' 



A SO" 



fg.O" 1 - 



2 7 



Fig. 6. The nebula Messier 33 and the positions of 517 small nebulae measured by Max Wolf. 



whether a number of well-known spiral nebulae might also be represented by loga- 

 rithmic spirals deformed with an elliptical term. 



In the spirals we should consequently liave to see star-producing mechanisms, 

 and as the final state of these a flattened globular duster would appear. From the 

 present investigation it seems to result, that the spirals are at a greater distance 

 than what corresponds to Jeans' hypothetic parallax for M 101, but probably one 

 may allow a far greater distance for these objects without conflicting with Jeans' 

 theory, which must operate with suppositions not proved; but nevertheless it seems 



