" To the Natural Philosopher there is no natural object that is unim- 

 portant or trifling : from the least of Nature's works he may learn the 

 greatest lessons." 



SIR J. F. W. HERSCHEL. 



" The likeliest method of discovering Truth is by the observations 

 and experiments of many upon the same subject : and the most probable 

 way of engaging people in such investigations, is by rendering such obser- 

 vations and experiments easy, attractive, and intelligible." 



BAKER ON THE MICROSCOPE. 



