Astrenomy. 77 
a I found several more in the same neighbor- 
hood, and afterward a considerable time passed before I came to 
another parcel.’””* 
Since the existence of real nebule has been established by the 
e Prof. D’Arrestt have 
called attention to the relation of position which the gaseous 
nebulz hold to the Milky Way and the sideral system. 
It was with the hope of adding to our information on this point 
a these observations of the motions of the nebule were under- 
aken. 
‘In the following list the numbers are taken from Sir J. 
Herschel’s “ General Catalogue of Nebulw.” The earth’s motion 
given is the mean of the motions of the different days of observa- 
tion. 
N h. H. Others. Earth’s motion from Nebule. 
1179 360 ae M. 42 7 miles per second. 
4234 1970 ee) z.5 12 95 fe 
4373 oe IV. 37 oe 1 “ “ 
4390 2000 ce 2.6 2 a “ 
4447 2023 ce M. 57 3 “ 
4510 2047 IV. 51. ‘a 14 = a 
4964 2241 TVs. ee es 
Zi 13 
—Proc. Roy. Soc., March, 1874. 
* Philosophical Transactions, 1784, p. 448. 
“ Other Worlds than Ours,” pp. 280-290. 
** Astronomische Nachrichten,” No. 1908, p. 190. 
