3 i8 IN STARRY REALMS. 



But perhaps the most comprehensive piece of astro- 

 nomical speetroscopy which has yet been undertaken is the 

 great Draper Memorial, at which Professor Pickering \& 

 labouring with such consummate skill at Harvard College, 

 Massachusetts. 



Mrs. Draper, in memory of her accomplished husband, 

 provided the means by which Professor Pickering might 

 carry on his work. The photographs of the stellar 

 spectra which have been obtained present a magnificent 

 display of lines. His operations have been conducted on 

 such a comprehensive scale that a complete spectj oscopic 

 review of all the stars in the heavens to the ninth 

 magnitude has been obtained. One who has not visited 

 Professor Pickering's observatory, and so has not seen the 

 yast astronomical research that is there carried on, can 

 have hardly any idea of the magnificence of the great 

 task. Many other observations, both in the old world 

 and the new, are also daily adding to our knowledge, until 

 in these later days we have learned how full of meaning 

 are the words, " One star differeth from another star in 

 glory." 



