38 



KNUT LUNDMARK, GLOBULAR CLUSTERS AND SPIRAL NTCBUL^E. 



g- and /i-types) we raay infer that they are probably of a spiral form, and that, con- 

 sequently, M 33 is the nucleus of a primary spiral form which consists of secundary 

 spirals. Nor is it quite implausible that some of these small nebulse are står clusters 

 and planetaries, 1 and that we consequently in M 33 and its surrounding nebulse have 

 to deal with a formation analogous to our Galaxy. It also deserves to be emphas- 

 ized, that the number of nebulse per unit of area is considerably greater on one half 

 of the map than on the other, and that we here might possibly have to see an 

 analogy to the asymmetrical distribution of globular clusters with respect to the 

 stellar system. 



Table VIII. 



Distribution of stars in and near Messier 33 according to counts on Wolf-Palisa 

 Chart No. 62. 



The cross designates the centrum of Messier 33 : 



a = l Ä 30"\o (1875,o) 

 5= + 30°O'. 

















1 



One square 



has 



a 



side of 8'.2. 



















9 



9 



7 



9 



10 



5 



11 



13 



12 



9 



7 



14 



7 



13 



15 



8 



16 



7 



14 



9 



9 



12 



11 



G 



13 



10 



5 



8 



8 



10 



6 



10 



14 



15 



9 



10 



13 



16 



7 



12 



9 



16 



15 



15 



12 



14 



9 



13 



10 



7 



8 



9 



11 



12 



8 



10 



17 



12 



12 



12 



9 



11 



12 



10 



13 



11 



11 



8 



9 



8 



14 



16 



8 



5 



14 



8 



14 



7 



6 



12 



9 



9 



15 



21 



14 



10 



9 



6 



16 



17 



10 



6 



11 



10 



7 



12 



9 



9 



9 



14 



4 



6 



7 



8 



11 



11 



13 



17 



8 



16 



16 



11 



10 



10 



13 



10 



12 



9 



12 



10 



9 



13 



10 



12 



14 



8 



7 



14 



9 



10 



14 



12 



12 



8 



15 



16 



8 



10 



12 



14 



16 



16 



9 



13 



10 



17 



11 



14 



7 



9 



10 



4 



6 



7 



7 



15 



14 



17 



9 



11 



14 



11 



12 



15 



8 



15 



11 



12 



8 



14 



12 



11 



8 



6 



7 



7 



8 



15 



12 



6 



10 



11 



10 



22 



8 



10 



16 



17 



10 



14 



14 



8 



14 



8 



8 



7 



13 



8 



9 



7 



17 



8 



6 



7 



5 



16 



16 



7 



8 



14 



17 



15 



9 



15 



11 



13 



13 



7 



12 



12 



18 



14 



12 



17 



14 



12 



12 



17 



10 



11 



10 



11 



19 



8 



16 



9 



7 



14 



12 



13 



4 



14 



7 



14 



11 



14 



11 



6 



10 



9 



15 



10 



10 



10 



11 



9 



15 



17 



13 



16 



7 



11 



8 



12 



9 



15 



7 



20 



7 



18 



11 



9 



8 



15 



8 



11 



20 



17 



9 



12 



6 



12 



12 



5 



9 



7 



IG 



14 



15 



9 



15 



15 



12 



14 



5 



12 



19 



10 



10 



11 



12 



10 



13 



12 



8 



7 



11 



19 



10 



15 



12 



6 



15 



13 



13 



10 



13 



9 



7 



11 



14 



17 



10 



7 



9 



7 



9 



5 



11 



10 



15 



7 



11 



10 



7 



7 



7 



12 



12 



16 



15 



10 



6 



5 



9 



6 



13 



13 



9 



15 



4 



J 



13 



6 



12 



7 



12 



6 



8 



9 



7 



9 



12 



9 



5 



11 



16 



13 



13 



10 



17 



17 



11 



10 







9 



11 



9 8 



13 



9 



8 



16 



7 



6 



11 



7 



12 



10 



11 



15 



14 



11 



7 



18 



14 



16 



10 



10 



9 



8 



7 



9 



11 



9 



i 



13 



11 



13 



9 



13 



9 



8 



17 



13 



9 



7 



13 



12 



9 



7 



15 



12 



11 



11 



3 



7 



13 



7 



10 



10 



12 



12 



6 



8 



9 



12 



11 



13 



15 



11 



9 



10 



8 



15 



11 



12 



19 



8 



14 



10 



7 



8 



8 



10 



6 



9 



11 



II 



10 



9 



11 



10 



12 



7 



9 



9 



11 



9 



1C 



12 



11 



7 



9 



10 



11 



11 



8 



9 



4 



5 



8 



7 



8 



11 



14 



7 



12 



10 



9 



13 



11 



7 



14 



7 



12 



10 



15 



12 



7 



19 



10 



14 



13 



15 



7 



12 



10 



9 



7 



13 



7 



12 



12 



7 



10 



12 



11 



5 



12 



5 



9 



11 



17 



19 



10 



11 



11 



12 



7 



11 



10 



8 



10 



7 



10 



9 



13 



11 



8 



8 



10 



9 



9 



7 



14 



7 



13 



6 



13 



9 



15 



12 



8 



13 



12 



13 



12 



12 



8 



6 



9 



14 



15 



12 



5 



9 



9 



5 



12 



12 



8 



11 



15 



13 



9 



10 



12 



11 



10 



13 



14 



16 



11 



6 



13 



8 



9 



12 



14 



11 







11 



13 



8 



9 



7 



13 



9 



11 



13 



12 



12 



13 



7 



8 



12 



13 



10 



10 



8 



11 



9 



9 



8 



10 



9 



10 



10 



11 



12 



9 



14 



7 



13 



13 



9 



20 



11 



24 



12 



11 



10 



14 



12 



7 



10 



7 



3 



10 



12 



12 



7 



12 



9 



14 



7 



17 



6 



7 



12 



15 



12 



14 



10 



14 



7 



10 



12 



11 



13 



14 



14 



14 



6 



18 



18 



11 



13 



11 



14 



9 



13 



12 



7 



14 



11 



1 N. G. C. 604, situated in one of the spiral arms of M 33, is known as a planetary nebula. 



