822 Lowell Ohservatory Photogra2)hs of the Planets. [April «, 



foundation for whatever shall subsequently be seen, and will enable 

 such changes as must inevitably ensue to be the better collated and 

 compared. They are the histories of the planets written by themselves, 

 their autobiographies penned by light ; and in their grand historical 

 portrait galle'iy, where the planets' pasts live on for ever in immortal 

 youth, astronomers yet to come may see the earher stages of the 

 great cosmic drama which is slowly but surely working itself out. 



[P. L.] 



