LIGHT SCIENCE 

 FOE LEISUEE HOUES. 



STRANGE DISCOVERIES RESPECTING 

 THE AURORA. 



ONE of the most mysterious and beautiful of 

 Nature's manifestations promises soon to disclose its 

 secret. The brilliant streamers of colored light which 

 wave at certain seasons over the heavens have long 

 since been recognized as among the most singular and 

 impressive of all the phenomena which the skies pre- 

 sent to our view. There is something surpassingly beau- 

 tiful in the appearance of the true " auroral curtain." 

 Fringed with colored streamers, it waves to and fro as 

 though shaken by some unseen hand. Then from end 

 to end there pass a succession of undulations, the folds 

 of the curtain interwrapping and forming a series of 

 graceful curves. Suddenly, and as by magic, there 

 succeeds a periecc stillness, as though the unseen 

 power which had been displaying the varied beauties 

 of the auroral curtain were resting for a moment. But 



