SIR 



Bausch & Lonib Optical Co. 



ISAAC NEWTON, 1642 1727. 



IVTEWTON must have been a clever boy, for although he did not do 

 * ^ well in school he was very ingenious. He made a clock which 

 ran by water, a sun dial, and a windmill which actually ground corn. 

 At the university he specialized in mathematics and science and 

 soon showed his genius. He improved methods of calculation in 

 mathematics and applied them in physics; he invented the reflect- 

 ing' telescope; he made navigation safer by making certain the 

 positions of the heavenly bodies; and he proved the pull of gravity 

 was a universal law. 



Newton's experiments with a glass prism and a beam of sunlight 

 were the beginnings of spectrum analysis, which is now a useful 

 tool of the scientist. The spectroscope, making use of the prism 

 principles, is particularly useful to the astronomer. 



After over 40 years of service in Cambridge University he died, 

 one of the most honored men of his time. 



