82 NUTATION. SECT. XI. 



stellation of the Little Bear, which was formerly 12 from the 

 celestial pole, is now within 1 24' of it, and will continue to 

 approach it till it is within J, after which it will retreat from 

 the pole for ages ; and 12,934 years hence the star a Lyrse will 

 come within 5 of the celestial pole, and become the polar star 

 of the northern hemisphere. 



