Dreyer — A Survff/ of tlie Sph-al Nebula 3Iessier $3. 29 



No. 



Description. 





y 







Meas. 



422 



pF, 



+ 1463'-72 



- 477-84 



+ 135l''97 



- 474-29 



2-2 



423 



F, iUdef., .. 



1463-83 



+ 1329-82 



1359-77 



+ 1332-92 



2-2 



424 



vB [30-247], 



1465-21 



+ 456-59 



1358-89 



+ 459-90 



2-2 



425 



B, 



1476-35 



- 1070-16 



1366-06 



- 1066-49 



2-2 



426 



eF, 



1485-07 



+ 71-72 



1377-74 



+ 75-07 



1-1 



427 



F, np of 2, . . 



1485-61 



- 61-85 



1377-94 



- 58-45 



2-2 



428 



pB, 



1498-96 



+ 777-27 



1393-46 



+ 780-42 



3-2 



429 



pF, sf of 2, 



1506-09 



- 88-25 



1398-34 



- 84-90 



2-2 



430 



pF, sfB*, 



1514-19 



+ 440-14 



1407-81 



+ 343-33 



2-2 



431 



pB, 



+ 1516-94 



- 737-81 



+ 1407-52 



- 734-33 



2-2 



It is hoped that the results embodied in this paper faithfully 

 represent the condition of this wonderful agglomeration of nebulosity 

 and stars for the epoch 1900. Changes will doubtless in future be 

 found to take place therein. The stars have proper motions, and 

 there is no reason why nebuloe should not also have such. Eut it 

 generally takes many years to make sure of a proper motion, and 

 observers, who after a few years believed they had found minute 

 changes going on in a nebula, have hitherto on every occasion proved 

 to have been too hasty. Judging from past experience, it is therefore 

 very unlikely that this generation will witness the discovery of changes 

 in nebulae established by photography. All the same, it seemed 

 desirable to ascertain how the coordinates given above agreed with 

 the best micrometer measures made at a sufficiently distant epoch, 

 those of Schultz, including the results contained in the supplement to 

 his Observations of 500 Nebulae," published in 1893 (Bihang till 

 K. Svenska Vetensk. Akad. Handlingar, Band 19, Afd. I.). The 

 objects measured by him are all referred to the star + 29°. 265, my 

 reference, star (4). Giving all the observations equal weight, and 

 using the place of the comparison star adopted above, I found 

 Schultz's positions for 1899.0 to be — 



KG. C. 588 

 „ 592 

 595 

 * 11 mag. 

 N.G. C. 604 



R.A. 



Ih27'" 4^-92 

 1 27 31 -51 

 1 27 52-75 

 1 28 12-60 

 1 28 51 -38 



Epocli. 

 1872.8 

 1874.9 

 1875.2 

 1874.9 

 1871.4 



Obs. 

 3 

 2 



3 

 2 



9 



Decl. 

 -f 30° 7' 42"-89 

 30 7 33 -98 

 30 10 24 -07 

 30 9 8 -86 

 30 15 57 -36 



Epocli. Obs. 

 1872.8 

 1872.8 

 1873.4 

 1874.9 

 1871.4 



