34 New Theories of the Great Forces. 



BRADLEY'S estimate of the velocity of light, 

 founded upon his study of " the aberration 

 of light," is even less worthy of consideration. 



Any effort to measure such an inconceiv- 

 able velocity as that claimed for light, by any 

 means or appliances which may be devised by 

 human ingenuity, must be regarded as futile. 

 DESCARTES says : " Light reaches us instan- 

 taneously from the sun, and would do so, 

 even if the intervening distance were greater 

 than that between the earth and heaven." 



