438 Scientific Intelligence. 
the recent researches of the Astronomer Royal have abundantly 
proved that the apparent proper motions of the stars are not to be 
recognized as principally due to the sun’s motion. Mr. Stone has 
shown even that we must assign to the stars a larger proper mo- 
tion, on the average, than that which the sun possesses. Looking, 
therefore, on So stars as severally in motion, with velocities ex- 
eeding t the sun’s on the e average, it cannot put be looked upon as 
highly saguiGionaet that in any large region of the heavens there 
should be a communit y of motion such as I have described. e 
motion as forming a distinct system, the members of 
which are associated indeed with the galactic system, but are much 
more intimately related to each other. In other parts of the 
heavens, however, there are instances of a star-drift opposed to the 
direction due to the solar motion. remarkable instance may be 
recognized among the seven bright stars "of Ursa Major. these, 
sun’s translation in space should be directed. If these five “ree: 
indeed, form a system torr I can see no other reasonable explan 
tion of so singular a community of motion), the mind is lost in 
contemplating t the Sioulenne of the periods which the revolutions 
of the components of the system mu ant oce ne 2 Midler had 
, an ietis appear to form a single system, wong the mo- 
on of « is not absolutely colnet either in ‘magni tude or direc- 
tion with that of # and 7, w are moving on absolutely parallel 
proper motions in both hem Ere ran are an at on the stereo- 
oa prajestion In — same eg also the oer due to the 
ao 08 aro 
Stars sais ha form part of 
